Bridges Rehabilitation · Structure Type 02
Bridge Rehabilitation & Load Upgradation
Specialist rehabilitation for highway bridges, ROBs, RUBs, culverts and pedestrian bridges. From condition assessment to load testing (IRC SP:51-2015) to capacity upgrade design — we extend bridge service life and bring them up to modern loading standards.
India's Ageing Bridge Stock Needs Rehabilitation
Most national and state highway bridges in India were designed for IRC Class A or 70R loadings. Today's heavier commercial vehicles and the move toward 100T trailer loads make capacity upgrade essential. NHAI and state PWDs increasingly mandate bridge load testing and capacity certification — work Namotech has been doing for over 18 years.
Common Bridges Challenges We Solve
Across 85+ bridge projects with NHAI, PWD and various state highway departments, we encounter these typical challenges:
Capacity Upgrade Needs
Old bridges designed for 66T need certification for 100T trailer loads under modern IRC:6 standards.
Deck Deterioration
Waterproofing failure, expansion joint damage, and rebar corrosion in bridge decks reduce safe load capacity.
Scour & Foundation
River bridges face scour damage to pier foundations — requiring scour protection and foundation strengthening.
Bearing Failures
Old bridge bearings (elastomeric, POT-PTFE) seize or distort — restricting bridge movement and causing stress.
Reinforcement Corrosion
Chloride from de-icing salts and atmospheric exposure causes rebar corrosion in bridge decks and piers.
Load Test Verification
Government bodies increasingly require IRC SP:51-2015 load testing before opening bridges to upgraded loads.
Bridge Types We Rehabilitate
Our bridge expertise spans every major bridge type used in Indian infrastructure:
Highway Bridges
National & state highway bridges (RCC, PSC, composite)
ROBs / RUBs
Road-over-bridge & road-under-bridge structures
FOBs & Pedestrian Bridges
Foot-over bridges, sky-walks, pedestrian crossings
Culverts & Minor Bridges
Box culverts, slab bridges, minor bridges under 30m
Flyovers & Elevated
Urban flyovers, elevated corridors, viaducts
River Bridges
High-level bridges over major rivers with deep foundations
Rehabilitation Services for Bridges
Purpose
To establish current bridge condition through systematic inspection of superstructure, substructure, foundation, bearings, expansion joints and approaches — providing IRC-compliant condition rating.
What We Do
- Visual inspection of all bridge elements per IRC SP:35
- NDT — Rebound Hammer, UPV, Half-Cell on deck & piers
- Concrete core testing for bridge concrete grade verification
- Steel NDT for steel bridge components (UT, RT, MPT, DPT)
- Bearing condition assessment & movement check
- Expansion joint condition evaluation
- Scour survey of pier foundations (river bridges)
- Bridge condition rating report (IRC SP:35 format)
ROB Bandikui — 30m PSC Box Girder Load Test
Static load testing of 30m PSC box girder ROB at Bandikui per IRC SP:51-2015. Sequential loading using 4 fully-loaded trucks (64T total). Measured mid-span deflection of 6.2mm against theoretical 8.4mm — confirming higher stiffness than designed. Bridge certified for full HL-93 loads.
🔗 Related Rehabilitation Pages
Explore other structure types we rehabilitate, or return to the main hub.
Need to Rehabilitate or Upgrade a Bridge?
From condition assessment to IRC SP:51 load testing to capacity upgrade design and execution PMC — Namotech offers complete bridge rehabilitation expertise. Government empanelled with NHAI and PWD.