Concrete Box Culverts & Aprons

Concrete box culverts and aprons manufactured by County Materials are ideal for applications where circular and elliptical concrete pipe cannot provide adequate flow capacity. These precast concrete components also work well in place of short-span bridges and multi-barrel culverts and drains. Various end treatments are available in select markets.

Sizes
Available in 3’ x 2’ to 12’ x 12’ spans - longer spans up to 20’ available in select markets

Applications

  • Highway and railroad culverts
  • Short span highway bridges
  • Storm drains
  • Livestock, pedestrian, or golf cart underpasses
  • Utility/Conveyor tunnels
  • Groundwater recharge systems
  • Jacked or tunneled installations
  • Underground storm water retention structures

County Materials’ Precast Concrete Box Sections meet the following specifications:

  • AASHTO M259 – Precast reinforced concrete box section for culverts, storm drains, and sewers
  • AASHTO M273 – Precast reinforced concrete box section for culverts, storm drains, and sewers with less than 2 feet of cover, subjected to highway loadings
  • ASTM C-1433 (HS-20) – Precast reinforced concrete box sections for culverts, storm drains, and sewers with 0 up to 35’ cover of cover, selected sizes have reduced cover heights, subjected to highway loadings.
  • ASTM C-1577(LFRD) – Precast reinforced concrete box sections for culverts, storm drains, and sewers with 0 up to 30’ cover of cover, selected sizes have reduced cover heights, subjected to highway loadings
For more information, contact a County Materials Pipe and Precast facility near you.
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Product Literature: