Portable Detour Bridges

The all-steel modular bridges described earlier in this brochure are an ideal choice when a detour bridge is required. Unlike panel bridges that require many parts and are labor intensive to erect, Big R portable bridges are delivered in separate modules. Erection is done quickly, often with existing equipment. Foundations range from piling to timber or concrete sills. Installation is often done in hours, not days. A variety of loadings from HS-20 to off-highway construction vehicle loadings are available. Our portable steel bridges, in both single and multi-lane widths, are available for lease or purchase. Additionally, a detour bridge can be used temporarily and later installed as a permanent structure.

detour bridge

Other Structural Solutions

cattle guardsCattle Guards

Big R cattle guards are manufactured to Forest Service, Bureau of Land Management and individual county or state specifications. Our Colorado plant is close to range country. Precast concrete bases are also available.]

corrugatedsteel pipeCorrugated Steel Pipe (CSP)

CSP in large diameter pipe or pipe-arch shapes are the preferred product for detention systems, as shown here, and for short span bridge replacements. We manufacture in galvanized, aluminized and polymer coated steel.

steel sheet pilingSteel Sheet Piling

Big R sheet piling is roll-formed with pre-galvanized or bare steel. Used behind bearing piling, it is cost-effective for bridge headwalls and wing walls. Other uses include trench shoring, retaining walls, cut-off walls and many more.

steel bridge deckSteel Bridge Deck

Big R manufactures a 4 1/4" deep steel deck section using Grade 50 steel in pre-galvanized or bare steel. Our deck is the strongest in the industry. While we use it in our all-steel modular bridges, it can also be installed on bridges that are erected in the field. It is widely used for new construction and to rehabilitate existing bridges.

bridge module

all steel modular bridge