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Culvert Rehabilitation

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What is Culvert Rehabilitation?

Culvert rehabilitation restores the performance and stability of stormwater and drainage culverts that have been compromised by settlement, leaks, or erosion. Through trenchless polymer injection, voids are filled, soils are stabilized, and watertight barriers are established to extend culvert life without costly replacement.

Problems Solved

  • Settlement undermining culverts and surrounding soils
  • Groundwater infiltration causing leaks and soil loss
  • Structural cracking or joint separation in culverts
  • Erosion and void formation beneath or around culvert pipes
  • Costly failures and flooding from compromised drainage

Types of Polymers Used

High-Density Polyurethane Foams

  • Expands to densify and stabilize loose backfill soils
  • Provides lightweight reinforcement without added soil pressure
  • Cures rapidly to minimize operational disruption

Structural Polyurethane Resins

  • Creates rigid reinforcement zones behind walls and utilities
  • Transfers structural loads to stable ground layers
  • Extends service life of supported structures

Hydro-Insensitive Polymers

  • Expands and cures in wet or groundwater conditions
  • Seals voids and prevents erosion in saturated soils
  • Provides long-term durability in challenging sites
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Benefits of Culvert Rehabilitation

Culvert rehabilitation with polymer injection strengthens soils, seals leaks, and restores culverts to working condition without excavation. These solutions protect stormwater systems and extend infrastructure life at lower cost.

Restore Stormwater Systems Without Full Replacement

  • Seals leaks and infiltration in culvert structures
  • Restores support and prevents settlement failures
  • Extends service life without full replacement
  • Minimizes disruption to stormwater and roadway systems

Key Applications

Highway & Roadway Culverts

Reinforces culverts supporting major transportation corridors

Rail Culverts

Stabilizes drainage structures beneath rail beds and embankments

Stormwater Drainage Systems

Restores water tightness and soil stability around culverts

Flood Control Structures

Protects against infiltration and settlement in levee culverts

Utility Crossings

Seals voids and restores stability where culverts intersect utilities

Municipal Drainage Facilities

Extends the life of city-owned storm water systems

Services

Culvert rehabilitation is supported by these services:

Void Filling

Void Filling

Eliminates cavities around culverts to restore support

Soil Stabilization

Soil Stabilization

Strengthens weak or eroded soils near structures

Waterproofing & Leak Sealing

Waterproofing & Leak Sealing

Seals infiltration in culverts and joints

Settlement Mitigation

Settlement Mitigation

Corrects soil movement impacting culvert alignment

Structural Reinforcement

Structural Reinforcement

Provides long-term strength for compromised culverts

Curtain Grouting

Curtain Grouting

Forms watertight barriers around culverts to block infiltration and prevent soil erosion

How the Process Works

1

Investigation

Culverts inspected for leaks, voids, and settlement issues

2

Planning

Injection design tailored to culvert type and soil conditions

3

Access

Small-diameter injection points installed with minimal surface disruption

4

Injection

Expanding polymers stabilize soils and seal culvert structures

5

Monitoring

Placement tracked in real time to ensure water tightness and stability

6

Validation

Final inspection confirms restored function and durability

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