Our Work : Services
GRAEF experts work across industry lines to provide you with the best possible service.
Fannie Road over Dead Lake Bridge
The Fannie Road bridge over Dead Lake was structurally deficient. GRAEF led the design team charged with returning the Escambia County structure to a safe condition. The existing 121 foot long bridge was constructed in 1960. It has eight spans ranging from fourteen to fifteen feet in length and uses a timber piling substructure. The existing bridge has a posted load limit of ten tons and been rehabilitated multiple times using various fixes.
For the current renovation, GRAEF investigated multiple bridge replacement solutions taking into account cost, construction duration, constructability, and environmental impacts. The team settled on a 4-span structure. The use of prefabricated bridge elements for the superstructure will decrease the construction duration by two months when compared to a poured concrete option. The precast slab units can be prefabricated concurrent with other bridge construction activities in a controlled environment off the construction site. The controlled environment increases quality control and reduces the dependency on unknowns such as weather. Improving quality of construction improves bridge durability resulting in a longer service life and lower life-cycle costs.