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Box Culverts  
Precast Box Culverts are ideal for situations where depth or height restrictions demand wide, shallow conduits to handle required flows, as well as:
Installations where circular or elliptical concrete pipe cannot provide adequate flow capacity
As a superior substitute for cast-in-place box culverts, long-span metal arches, short bridges and multibarrel circular culverts or drains
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Applications
Precast Box Culverts can be used for the following:
Highway culverts
Railroad culverts
Short-span highway bridges
Storm drains
Extension of existing box culverts
Livestock, pedestrian or golf cart undercrossings
Utility tunnels
Underground stormwater retention systems
Groundwater recharge systems
To replace existing open channels or ditches, enabling land to be used productively
Jacked or tunneled installations
 
Sizes
Precast Box Culverts are normally available in spans of 3 feet (.914m) through 12 feet (3.6m), with a variety of rises. Some markets produce spans to 20 feet. Contact your local Hanson representative for specifics.
 
Linings/Coatings
A variety of linings and coatings are available as dictated by project conditions.
 
Support Elements
Precast headwalls and wingwalls are available for most sizes.
 
Applicable Specifications
ASTM C1433 — Precast Reinforced Concrete Box Sections for Culverts, Storm Drains and Sewers
State DOTs
OPSS 1821 — Ontario Provincial Standard Specification 1821, material specification for precast reinforced concrete box culverts and box sewers.