Road maintenance

National Highways Authority of India

Table 1: Maintenance Criteria for Pavements

Asset Type	Performance Parameter	Desirable	Acceptable	Frequency of Inspection	Tools/Equipment	Standards and References for Inspection and Data Analysis	Time limit for Rectification / Repair	Maintenance specifications
Flexible Pavement Routine Inspection (Pavement of MCW, Service Road, Approach of Grade structures, approaches of connecting roads, slip roads, lay byes etc. as applicable)	Potholes	Nil	<0.1% of area and subjected to limit of 10mm in depth	Daily	Length Measurement Unit like Scale, Tape, odometer etc.	MORT&H	24-48 hours	MORT&H Specification 3004.2
	Cracking	Nil	<5% subject to limit of 0.5 sqm for any 50m length	Daily			7-15 days	MORT&H Specification 3004.3
	Rutting	Nil	<5mm	Daily	Straight Edge	IRC 82: 2015 and	15-30 days	MORT&H Specification 3004.2
	Corrugations and Shoving	Nil	0.1% of area	Daily	Length Measurement	Distress Identification Manual for Long Term Pavement Performance Program, FHWA 2003	2-7 days	IRC:82-2015
	Bleeding	Nil	<1% of area	Daily	Unit like Scale, Tape, odometer etc.		3-7 days	MORT&H Specification 3004.4
	Ravelling/ Stripping	Nil	<1% of area	Daily	Length Measurement Unit like Scale, Tape, odometer etc.		7-15 days	IRC:82-2015 read with IRC SP-81
	Edge Deformation / Breaking	Nil	and/or width <0.1m at any Location restricted to 30cm from the edge. <1m for any 100m section	Daily			7-15 days	IRC:82-2015
	Roughness	2000 mm/km	2400 mm/km	Bi-Annually	Network Survey vehicle (NSV) with all its module such as Laser Profilometers, Transverse profile logger, Laser crack measurement system, Video logging modules, high resolution Odometer etc.	ASTM E950 (98) :2004 Standard Test Method for measuring Longitudinal Profile of Travelled Surfaces with Accelerometer Established Inertial Profiling Reference and ASTM E1656 -94:2000- Standard Guide for Classification of Automatic Pavement Condition Survey Equipment	180 days	IRC:82-2015
	Rutting	<10mm for any 50 m section and/or, length of section <5m	<10mm for any 50 m section and/or, length of section <10m	Bi-Annually			15-30 days	IRC:82-2015
	Pavement rating based on distress per IRC 82 / Pavement Condition Index as per ASTM 6433-07	>3/85	>2.1/70	Bi-Annually			180 days	IRC:82-2015/ ASTM D 6433-07
Flexible Pavement Programmed Inspection	Other Pavement Distresses	-	-	Bi-Annually			2-7 days	IRC:82-2015
	Skid	60SN	50SN	Bi-Annually	SCRIM (Sideway force Coefficient Routine Investigation Machine or equivalent) British Pendulum Tester	BS:7941-1:2006, IRC:82-2015/ ASTM 274	180 days	IRC:82-2015
	Deflection/ Remaining Life		-	Annually	Falling Weight Deflectometer	IRC 115: 2014	180 days	IRC:115-2014
Rigid Pavement (Pavement of MCW, Service Road, Grade separated structure, approaches of connecting roads, slip roads, lay byes etc. as applicable.	Roughness BI	<2200mm/km	<2400mm/km	Bi-Annually	Class I Profilometer Mounted on NSV	ASTM E950 (98) :2004 and ASTM E1656 -94: 2000	180 days	IRC: SP:83-2018
	Skid	Skid Resistance No. at different speed of vehicles Minimum SN Traffic Speed 36 50 33 65 32 80 31 95 31 100		Bi-Annually	SCRIM (Sideway force Coefficient Routine Investigation Machine or equivalent) British Pendulum Tester		180 days	IRC: SP:83-2018
Embankment /Slope	Edge drops at shoulders	Nil	40mm	Daily	Length Measurement Unit like Scale, Tape, odometer etc.	IRC	7-15 days	MORT&H Specification
	Slope of camber/cross fall	Nil	<2% variation in prescribed slope of camber /cross fall	Daily			7-15 days	MORT&H Specification
	Embankment Slopes	Nil	<15 % variation in prescribe side slope	Daily			7-15 days	MORT&H Specification
	Embankment Protection	Nil	Nil	Daily	NA		7-15 days	MORT&H Specification
	Rain Cuts/Gullies in slope	Nil	Nil	Daily Specially During Rainy Season	NA	IRC	7-15 days	MORT&H Specification
Cut Section/ Slope	Unstable Slopes	Nil	-		NA	IRC	2-7 days	MORT&H Specification

Table 2: Maintenance Criteria for Rigid Pavements

S. No	Type of Distress	Measured Parameter	Degree of Severity	Assessment Rating	Repair Action
					For the case d < D/2	For the case d > D/2
CRACKING	1	Single Discrete Cracks Not intersecting with any joint or Single Transverse (or Diagonal) Crack intersecting with one or more joints	w = width of crack, L = length of crack, d = depth of crack, D = depth of slab	0	Nil, not discernible	No Action	-
				1	w < 0.2 mm. hair cracks	Seal without delay	Full Depth Repair Dismantle and reconstruct affected portion - See Para 5.4, within 15 days
				2	w = 0.2 - 0.5 mm, discernible from slow-moving car
				3	w = 0.5 - 1.5 mm, discernible from fast-moving car	Seal and stitch if L > l m. within 7 days
				4	w = 1.5 - 3.0 mm
				5	w > 3 mm.
	2	Single Transverse (or Diagonal) Crack intersecting with one or more joints	w = width of crack L = length of crack d = depth of crack D = depth of slab	0	Nil, not discernible	No Action
				1	w < 0.2 mm. hair cracks	Route and seal with Epoxy within 7 days	Seal Staple within 15days & Cross stich or
				2	w = 0.2 - 0.5 mm, discernible from slow-moving car
				3	w = 0.5 3.0 mm, discernible from fast-moving car	Seal and stitch, if L > l m. within 7 days	Full Depth Repair Dismantle and reconstruct affected portion with norms & Specifications - See Para 5.5 &refer chapter 9 of IRC: SP: 83-2018, within 15 days.
				4	w = 3.0 - 6.0 mm	Not Applicable	Staple or Dowel Bar Retrofit within 15 days.
				5	w > 6 mm, usually associated with spalling, and/or slab rocking under traffic	Not Applicable, (full depth crack)	Staple or Dowel Bar Retrofit within 15 days
	3	Single Longitudinal Crack intersecting with one or more joints	w = width of crack L = length of crack d = depth of crack D = depth of slab	0	Nil, not discernible	No Action
				1	w < 0.5 mm, discernable from slow moving vehicle	Seal and stich if L >l m within 7 days	Seal and Cross-Stich or Staple within 15 days
				2	w = 0.5 - 3.0 mm, discernible from fast vehicle	Seal & Staple, within 15 days	Partial Depth Repair with or without dowel bar retrofit within 15 days or
				3	w = 3.0 - 6.0 mm
				4	w = 6.0 - 12.0 mm, usually associated with spalling	Not applicable
				5	w > 12 mm, usually associated with spalling, and/or slab rocking under traffic	Not Applicable, (Rocking/ Spalling indicates full depth crack)	Full Depth Repair Dismantle and reconstruct affected portion - See Fig 5.6 and Chapter 9 of IRC: SP:83-2018, within 15 days
	4	Multiple Cracks intersecting with one or more joints	w = width of crack	0	Nil, not discernible	No Action
				1	w < 0.2 mm. hair cracks	Seal and stitch if L > l m. within 15 days	Dismantle and Reconstruct whole slab as per Specifications within 30days.
				2	w = 0.2 - 0.5 mm, discernible from slow-moving car
				3	w = 0.5 3.0 mm, discernible from fast-moving car	Full depth repair within 15 days
				4	w = 3.0 - 6.0 mm panel broken into 2 or 3 pieces		Reinstate sub- base, reconstruct whole slab within 30days.
				5	w > 6 mm and/or panel broken into more than 4 pieces
	5	Corner Break	w = width of crack, L = length of crack	0	Nil, not discernible	No Action
				1	w < 0.5 mm; only 1 corner broken	Seal with low viscosity epoxy to secure broken parts within 7 days
				2	w < 1.5 mm; L < 0.6 m, only one corner broken		Partial Depth (Refer Figure 8.3 of IRC: SP:83-2018) within 15 days
3				w < 1.5 mm; L < 0.6 m, two corners broken
4				w > 1.5 mm; L > 0.6 m or three corners broken		Full depth repair within 30 days.
5				three or four corners broken		Reinstate sub-base, and reconstruct the slab as per norms & Specifications within 30 days.
6	Punchout (Applicable to Continuous Reinforced Concrete Pavement CRCP only)	w = width of crack L = length (m/m2)	0	Nil, not discernible	No Action	Not Applicable, (Punch-out is full depth Distress)
			1	w < 0.5 mm; L < 3 m/m2	Full depth repair - Cut out and replace damaged area taking care not to damage reinforcement. Within 30 days.	Seal with low viscosity epoxy to secure broken parts Within 15 days
			2	either w > 0.5 mm or L < 3 m/m2
			3	w > 1.5 mm and L < 3 m/m2
			4	w > 3 mm, L < 3 m/m2 and deformation
			5	w > 3 mm, L > 3 m/m2 and deformation
Surface Defects	7	Ravelling or Honeycomb type surface	r = area damaged surface/total surface of slab (%) h = maximum depth of damage	0	Nil, not discernible	No action.	Not Applicable
				1	r < 2 %	Local repair of areas damaged and liable to damage. Within 15 days
				2	r = 2 - 10 %
				3	r = 10-25%	Bonded Inlay, if affecting 2 or 3 slabs. Within 30 days
				4	r = 25 - 50 %
				5	r > 50% and h > 25 mm	Reconstruct slabs, if affecting 4 or more slabs. Within 30 days
	8	Scaling	r = area damaged surface/total surface of slab (%) h = maximum depth of damage	0	Nil, not discernible	No action.	Not Applicable
				1	r < 2 %	Local repair of areas damaged and liable to within 7 days
				2	r = 2 - 10 %	Bonded Inlay within 15 days
				3	r = 10 - 20%
				4	r = 20 - 30 %
				5	r > 30 % and h > 25 mm	Reconstruct slab within 30 days.
	9	Polished Surface/Glazing	t = texture depth, sand patch test	0		No action.	Not Applicable
				1	t > 1 mm	Monitor rate of deterioration
				2	t = 1 - 0.6 mm
				3	t = 0.6 - 0.3 mm
				4
				5	t < 0.3 mm	Diamond Grinding if affecting 50% or more slabs in a continuous stretch of minimum 5 km. Within 30 days
	10	Popout (Small Hole), Pothole Refer Para 8.4	n = number/m2, d = diameter, h = maximum depth	0	d < 50 mm; h < 25 mm; n < 1 per 5 m2	No action.	Not Applicable
				1	d = 50 - 100 mm; h < 50 mm; n < 1 per 5 m2	Partial depth repair 65 mm deep. Within 15 days
				2	d = 50 - 100 mm; h > 50 mm; n < 1 per 5 m2
				3	d = 100 - 300 mm; h < 100 mm n < 1 per 5 m2	Partial depth repair 110mm i.e.,10 mm more than the depth of the hole within 30 days
				4	d = 100 - 300 mm; h > 100 mm; n < 1 per 5 m2
5				d > 300 mm; h > 100 mm: n > 1 per 5 m2	Full depth repair within 30 days.
JOINT DEFECT	11	Joint Seal Defects	loss or damage L = Length as % total joint length	0	Difficult to discern.	No action.
				1	Discernible, L< 25% but of little immediate consequence with regard to ingress of water or trapping incompressible material.	Clean joint, inspect later.	Not Applicable
				3	Notable. L > 25% insufficient protection against ingress of water and trapping	Clean and reapply sealant in selected locations. Within 7 days.	Not Applicable
				5	Severe; w > 3 mm negligible protection against ingress of water and trapping incompressible material.	Clean, widen and reseal the joint following strict procedures within 7 days.
12	Spalling of Joints	w = width on either side of the joint L = length of spalled portion (as % joint length)	0	Nil, not discernible	No action.
			1	w < 10 mm	Apply low viscosity epoxy resin/mortar in cracked portion within 7 days
			2	w = 10 - 20 mm, L < 25%
			3	w = 20 - 40 mm, L > 25%	Partial Depth Repair, 30 - 50 mm deep, h = w+ 20% of w, within 30 days
			4	w = 40 - 80 mm, L > 25%
			5	w > 80 mm, and L > 25%	50 - 100 mm deep repair. H = w + 20% of w, within 30 days
13	Faulting (or Stepping) in Cracks or Joints	f = difference of level	0	not discernible, < 1 mm	No action.
			1	f < 3 mm
			2	f = 3 - 6 mm	Determine cause and observe
			3	f = 6 - 12 mm	Diamond Grinding within 15 days
			4	f= 12 - 18 mm	Raise sunken slab within 15 days.
			5	f> 18 mm	Strengthen subgrade and sub-base by grouting, within 30 days.
14	Blowup or Buckling	h = vertical displacement from normal profile	0	Nil, not discernible	No action.
			1	h < 6 mm	Install Signs to Warn Traffic, within 24 hours days
			2	h = 6 - 12 mm
			3	h = 12 - 25 mm
			4	h > 25 mm	Full Depth Repair, within 30 days.
			5	shattered slabs, i.e. 4 or more pieces	Replace broken slabs, within 30 days.
15	Depression	h = negative vertical displacement from normal profile. L = length	0	Not discernible. h < 5 mm	No action.
			1	h = 5 - 15 mm	Install Signs to Warn Traffic, within 24 hours
			2	h = 15 - 30 mm, Nos<20% joints
			3	h = 30 - 50 mm
			4	h > 50 mm or > 20% joints	Strengthen subgrade. Reinstate pavement at normal level, within 30 days.
			5	h > 100 mm
16	Heave	h = positive vertical displacement from normal profile. L = length	0	Not discernible. h < 5 mm	No action.
			1	h = 5 - 15 mm	Follow up.
			2	h = 15 - 30 mm, Nos<20% joints	Install Signs to Warn Traffic, within 24 hours
			3	h = 30 - 50 mm
			4	h > 50 mm or > 20% joints	Stabilise subgrade. Reinstate pavement at normal level, within 30 days
			5	h > 100 mm
17	Bump	h = vertical displacement from normal profile	0		No action.
			1	h = 4 - 7 mm	Grind, in case of new construction. Within 7 days
			3	h = 7 - 15 mm	Grind in case of Ongoing maintenance within 15 days
			5	h > 15 mm
18	Lane to Shoulder Drop- off	f = difference of level	0	not discernible < 3mm	No action.
			1	f = 3 - 10 mm	Spot repair of shoulder. Within 3 days
			2	f = 10 - 25 mm
			3	f = 25 - 50 mm	Fill up shoulder within 7 days
			4	f = 50 - 75 mm	For any 100 m segment, Reconstruct shoulder, if affecting 25% or more of segment, within 30 days.
			5	f > 75 mm
DRAINAGE	19	Pumping	quantity of fines and water expelled through open joints and cracks Nos/100 m stretch	0	not discernible	No action.
				1 to 2	slight/occasional Nos< 10%	Repair cracks and joints without delay	Inspect and repair Sub-drainage at distressed sections and upstream
				3 to 4	appreciable/Frequent 10 - 25%	Lift or jack slab within 30 days.
				5	abundant, crack development > 25%	Repair distressed pavement sections. Strengthen subgrade And sub-base. Replace slab. Within 30 days.
20	Ponding	Ponding on slabs due to blockage of drains	0-2	No discernible problem	No action.	Action required to stop water damaging foundation within 15 days.
			3 to 4	Blockages observed in drains, but water flowing	Clean drains etc., follow up, deep groving in transverse direction to remove
			5	Ponding, accumulation of water observed	Deep groving in transverse direction to remove water-hydro planning within 7 days

Table 3: Maintenance Criteria for Safety Related Items and Other Furniture Items

Asset Type	Performance Parameter	Level of Service (LOS)	Design Speed (kmph)	Desirable Minimum Sight Distance (m)	Safe Stopping Sight Distance (m)	Frequency of Measurement	Testing Method	Recommended Remedial Measures	Time limit for Rectification	Specifications and Standards
Highway	Availability of Safe Sight Distance	As per IRC SP:84-2019, a minimum of safe stopping sight distance shall be available throughout.	100	360	180	Monthly	Manual Measurements With Odometer along with video/ image backup	Removal of obstruction within 24 hours, in case of sight line affected by temporary objects such as trees, temporary encroachments. In case of permanent structure or design deficiency: * Removal of obstruction/ improvement of deficiency at the earliest * Speed Restriction boards and suitable traffic calming measures such as transverse bar marking, blinkers, etc. shall be applied during the period of rectification.		IRC: SP:84-2019
			80	260	130
	Pavement Marking Wear	<70% of marking remaining				Bi-Annually	Visual Assessment as per Annexure- F of IRC:35-2015	Re-Painting Cat-1 Defect within 24 hours Cat-2 Defect within 2 months		IRC:35-2015
	Day time Visibility	During expected life Service Time - 130mcd/m2/lux - 100mcd/m2/lux				Monthly	As per Annexure- D of IRC:35- 2015	Re-Painting Cat-1 Defect within 24 hours Cat-2 Defect within 2 months		IRC:35-2015
	Night Time Visibility	Initial and Minimum Performance for Dry Retro reflectivity during night time:	Design Speed (RL) Retro-Reflectivity (mcd/m²/lux)	Initial (7Days)	Minimum Threshold Level and warranty period required up to 2 years (TL)	Bi-Annually	As per Annexure-E of IRC:35- 2015	Re-Painting Cat-1 Defect within 24 hours Cat-2 Defect within 2 months		IRC:35-2015
			Up to 65	200	80
			65 - 100	250	120
			above 100	350	150
		Initial and Minimum Performance for Night Visibility under wet condition (Retro reflectivity):		mcd/m2/lux	mcd/m2/lux
	Skid Resistance	Initial and Minimum performance for Skid Resistance *Note: shall be considered under urban/city traffic condition encompassing the locations like pedestrian crossings, bus bay, bus stop, cycle track intersection delineation, transverse bar markings etc.				Bi-Annually	As per Annexure-G of IRC:35- 2015	Within 24 hours		IRC:35-2015
Road Sign	Shape and Position	Shape and Position as per IRC:67- 2012. Signboard should be clearly visible for the design speed of the section				Daily	Visual with video/image backup	Improvement of shape, in case if shape is damaged. Relocation as pe requirement	48 hours in case of Mandatory Signs, Cautionary and Informatory Signs (Single and Dual post signs), 15 Days in case of Gantry/ Cantilever Sign boards	IRC:67-2012
	Retro reflectivity	As per specifications in IRC:67-2012				Bi-Annually	Testing of each signboard using Retro Reflectivity Measuring Device. In accordance with ASTM D 4956-09	Change of signboard	48 hours in case of Mandatory Signs, Cautionary and Informatory Signs (Single and Dual post signs). 1 Month in case of Gantry/ Cantilever Sign boards	IRC:67-2012
Kerb	Kerb Height	As per IRC 86:2018 depending upon type of Kerb				Bi-Annually	Use of distance measuring tape	Raising Kerb Height	Within 1 Month	IRC 86:2018
	Kerb Painting Functionality	Functioning of Kerb painting as intended				Daily	Visual with video/image backup	Kerb Repainting	Within 7-days	IRC 35:2015
Other Road Furniture	Reflective Pavement Markers (Road Studs)	Numbers and Functionality as per specifications in IRC: SP:84-2019 and IRC:35-2015, unless specified in Schedule-B.				Daily	Counting	New Installation	Within 2 months	IRC: SP:84-2019, IRC:35-2015
	Pedestrian Guardrail Functionality	Functioning of guardrail as intended				Daily	Visual with video/image backup	Rectification	Within 15 days	IRC: SP:84-2019
	Traffic Safety Barriers Functionality	Functioning of Safety Barriers as intended				Daily	Visual with video/image backup	Rectification	Within 7-days	IRC: SP:84-2019, IRC:119-2015
	End Treatment of Traffic Safety Barriers Functionality	Functioning of End treatment as intended				Daily	Visual with video/image backup	Rectification	Within 7-days	IRC: SP:84-2019, IRC:119-2015
	Attenuators Functionality	Functioning of Attenuators as intended				Daily	Visual with video/image backup	Rectification	Within 7-days	IRC: SP:84-2019, IRC:119-2015
	Guard Posts and Delineators Functionality	Functioning of Guard Posts and Delineators as intended				Daily	Visual with video/image backup	Rectification	Within 15 days	IRC:79-2019
	Overhead Sign Structure	Overhead sign structure shall be structurally adequate				Daily	Visual with video/image backup	Rectification	Within 15 days	IRC:67-2012
	Traffic Blinkers Functionality	Functioning of Traffic Blinkers as intended				Daily	Visual with video/image backup	Rectification	Within 7-days days	IRC: SP:84-2019
	Highway Lighting System Highway Lights	Illumination: Minimum 40 Lux illumination on the road surface				Daily	The illumination level shall be measured with lux- meter	Improvement in Lighting System	24 hours	IRC: SP:84-2019
	No major failure in the lighting system				Daily	-	Rectification of failure	24 hours	IRC: SP:84-2019
	No minor failure in the lighting system				Monthly	-	Rectification of failure		IRC: SP:84-2019
	Toll Plaza Canopy Lights Minimum 40 Lux illumination on the road surface				Daily	The illumination level shall be measured with lux- meter	Improvement in Lighting System	24 hours	IRC: SP:84-2019
	No major/minor failure in the lighting system				Daily		Rectification of failure	8 hours	IRC: SP:84-2019
Trees and plantation including median plantation	Obstruction in a minimum head- room of 5.5 m above carriageway or obstruction in visibility of road signs					Monthly	Visual with video/image backup	Removal of trees	Immediate	IRC: SP:84-2019
	Deterioration in health of trees and bushes					Daily	Visual with video/image backup	Timely watering and treatment. Or Replacement of Trees and Bushes.	Within 90 days	IRC: SP:84-2019
	Vegetation affecting sight line and road structures					Daily	Visual with video/image backup	Removal of trees	Immediate	IRC: SP:84-2019
	Rest Area Cleaning of toilets					Daily	-	-	Every 4 hours	-
	Defects in electrical, water and sanitary installations					Daily	-	Rectification	24 hours	-
	Other Project Facilities and Approach roads	Damage or deterioration in Approach Roads, pedestrian facilities, truck lay-bys, bus-bays, bus-shelters, cattle crossings, Traffic Aid Posts, Medical Aid Posts, and other works				Daily	-	Rectification	15 Day	IRC: SP:84-2019

Table 4: Maintenance Criteria for Structures and Culverts

Asset Type	Performance Parameter	Level of Service (LOS)	Frequency of Measurement	Testing Method	Recommended Remedial measures	Time limit for Rectification	Specifications and Standards
Pipe/box/slab culverts	Free waterway/ unobstructed flow section	85% of culvert normal flow area to available.	2 times in a year (before and after rainy season)	Inspection by Bridge Engineer as per IRC SP: 35- 1990 and recording of depth of silting and area of vegetation	Cleaning silt up soils and debris in culvert barrel after rainy season, removal of bushes and vegetation, U/s of barrel, under barrel and D/s of barrel before rainy season.	15 days before onset of monsoon and within 30 days after end of rainy season.	IRC 5-2015, IRC SP:40-2019 and IRC SP:13-2004
	Leak-proof expansion joints if any	No leakage through expansion joints	Bi-Annually	Physical inspection of expansion joints as per IRC SP: 35- 1990 if any, for leakage strains on walls at joints.	Fixing with sealant suitably	30 days or before onset of rains whichever comes earlier	IRC SP:40-2019 and IRC SP:69-2011
	Structurally sound	Spalling of concrete not more than 0.25 sq.m.	Bi-Annually	Detailed inspection of all components of culvert as per IRC SP:35-1990 and recording the defects	Repairs to spalling, cracking, delamination, rusting shall be followed as per IRC: SP:40-2019.	15 days	IRC SP 40-2019 and MORTH Specifications clause 2800
		Delamination of concrete not more than 0.25 sq.m.
		Cracks wider than 0.3 mm not more than 1m aggregate length
	Protection works in good condition	Damaged of rough stone apron or bank revetment not more than 3 sq.m, damage to solid apron (concrete apron) not more than 1 sq.m	2 times in a year (before and after rainy season)	Condition survey as per IRC SP:35-1990	Repairs to damaged aprons and pitching	30 days after defect observation or 2 weeks before onset of rainy season whichever is earlier.	IRC: SP 40-2019 and IRC SP:13-2004
Bridges including Flyover and Viaducts etc. as applicable	Riding quality	No pothole in wearing coat on bridge deck	Daily	Visual inspection as per IRC SP:35-1990	Repairs to BC or wearing coat	15 days	MORT&H Specification 2811
	Bumps	No bump at expansion joint	Daily	Visual inspection as per IRC SP:35-1990	Repairs to BC on either side of expansion joints, profile correction course on approach slab in case of settlement to approach embankment	15 days	MORT&H Specification 3004.2 & 2811
Bridges including Flyover and Viaducts etc. -Super Structure	User safety (condition of crash barrier and guard rail)	No damaged or missing stretch of crash barrier or pedestrian hand railing	Daily	Visual inspection and detailed condition survey as per IRC SP: 35-1990	Repairs and replacement of safety barriers as the case may be	3days	IRC: 5-2015, IRC SP: 84-2019 and IRC SP: 40- 2019
	Rusted reinforcement	Not more than 0.25 sq.m	Bi-Annually	Detailed condition survey as per IRC SP: 35-1990 using Mobile Bridge Inspection unit.	Repairs to spalling, cracking, delamination, rusting shall be followed as per IRC: SP:40-2019.	15 days	IRC SP: 40-2019 and MORTH Specification 2800
	Spalling of concrete	Not more than 0.50 sq.m
	Delamination	Not more than 0.50 sq.m
	Cracks wider than 0.30 mm	Not more than 1m total length
	Rainwater seepage through deck slab	Leakage - nil
	Deflection due to permanent loads and live loads	Within design limits.	Once in every 10 years for spans more than 40 m	Load test method	Carry out major rehabilitation works on bridge to retain original design loads	6 months	IRC SP: 51-2015
	Vibrations in bridge deck due to moving trucks	Frequency of vibrations shall not be more than 5 Hz	Once in every 5 years for spans more than 30m and every 10 years for spans between 15 to 30	Laser displacement sensors or laser vibro- meters	Strengthening of super structure	4 months	AASHTO, LRFD specifications
Bridges including Flyover and Viaducts etc. -Super Structure	Leakage in Expansion joints	No damage to elastomeric sealant	Bi-Annually	Detailed condition survey as per IRC SP: 35-1990. using Mobile Bridge Inspection Unit.	Replacement of seal in expansion joint. Replacement of Sealing compound in case of leakage I case of copper strip type joint.	15 days	MORTH specifications 2600, IRC SP: 40- 2019.
	Debris and dust in strip seal expansion joint	No dust or debris in expansion joint gap.	Monthly	Detailed condition survey as per IRC SP: 35-1990. using Mobile Bridge Inspection Unit.	Cleaning of expansion joint gaps thoroughly	3 days	MORTH specifications 2600, IRC SP: 40-2019 and IRC: SP:69-2011
	Drainage spouts	No down take Pipe missing/broken below soffit of the deck slab. No silt, debris, clogging of drainage spout collection chamber.	Monthly	Detailed condition survey as per IRC SP: 35-1990. using Mobile Bridge Inspection Unit.	Cleaning of drainage spouts thoroughly. Replacement of missing/broken down take pipes with a minimum pipe extension of 500mm below soffit of slab. Providing sealant around the drainage spout if any leakages observed.	3 days	MORTH specification 2700
	Cracks/ spalling of concrete /rusted steel	No cracks, spalling of concrete and rusted steel	Bi-Annually	Detailed condition survey as per IRC SP:35-1990 using Mobile Bridge Inspection Unit.	All the corroded reinforcement shall need to be thoroughly cleaned from rusting and applied with anti- corrosive coating before carrying out repairs to substructure by grouting/guiniting and micro concreting depending on type of defect noticed	30 days	IRC SP: 40-2019 and MORTH specification 2800
Bridges including Flyover and Viaducts etc. - Bridge Substructure	Delamination of reinforcement not more than 5%, cracking or tearing of rubber not more than 2 locations per side, no rupture of reinforcement or rubber		Bi-Annually	Detailed condition survey as per IRC SP: 35-1990 using Mobile Bridge Inspection unit.	In case of failure of even one bearing on any pier/abutment, all the bearings on that pier/abutment shall be replaced, in order to get uniform load transfer on to bearings.	3 months	MORTH specification 2810, IRC SP: 40-2019 and IRC:83 (Part-II)-2018
	POT/PFFE and Spherical Bearings	No locking of movable and rotational parts, No Corrosion, Cleanliness	Bi-Annually	Detailed condition survey as per IRC SP: 35-1990 using Mobile Bridge Inspection unit.	Unlocking of affected parts, Cleaning of Rust and repainting. General Cleaning of bearings.	30 days	IRC:83 (Part-III)-2018, IRC:83 (Part-IV)-2014
	Scouring around Foundations	Scouring shall not be lower than maximum scour level for the bridge	Bi-Annually	Condition survey and visual inspection as per IRC SP:35-1990 using Mobile Bridge Inspection Unit. In case of doubt Underwater camera for Inspection of deep wells in Major Rivers.	Suitable protection works around pier/abutment	1 month	IRC SP: 40-2019, IRC: 89-2019, IRC:78-2014, MORTH specification 2500
	Protection works in good condition	Damaged of rough stone apron or bank revetment not more than 3 sq.m, damage to solid apron (concrete apron) not more than 1 sq.m	2 times in a year (before and after rainy season)	Condition survey as per IRC SP:35-1990	Repairs to damaged aprons and pitching	30 days after Defect observation or 2 weeks before onset of rainy Season whichever is earlier.	IRC: SP 40-2019, IRC: SP:13- 2004 and IRC:89-2019