All bridges have design requirements, (length, width, site carrying capacity. Once your bridge design requirements are set, let our engineers (outside)design your bridge P.E. Licensed in MN and WI.

Construction methods can be either beam or truss type. Materials can be mild steel or core ten. When paint or rust protection is not required, beam construction works well. Erection on site allows beam construction project to be a good group project to save money.

Truss type construction takes design advantage to reduce overall cost by reducing weight. Structural members made from core ten materials allowing for bridge to go unpainted for years.

Piling choices vary from site to site depending upon soil conditions, reach needed, cost and environmental concerns. Pilings available are H, helical and wooden. All pilings create load through friction generated from driving pile into the ground. Typical applications or cost/benefit for each type of pile. H piling typically becomes more expensive but can be driven to greater distance. H pile requires more soil control because of the size and support equipment necessary during installation. Helical pile typically is less expensive and less intrusive to soil than H pile. Wooden pile is driven similar to H piles so soil stabilization is again necessary. Size of wooden pile and wood characteristics creates surface contact reducing distance wooden piles need to be driven verses H piles.

Beam Bridge 186’ span - H Piles

Helical Pile Installation	Truss Bridge

Some things you should consider prior to, starting your bridge project:

• Permitting secured?
• Will a budget number be necessary?
• Bridge site and approaches consideration.
• What is the minimum clearance over span?
• Do I need abutments?
• What proper environmental action needs to be taken?
• What season is best to build?
• Should a core sample be taken?

Helical Pilings going in
Completed project seeded and mulched