Client: US Army Corps of Engineers
Location: Fort Belvoir, Virginia
Services: Structural engineering
KCI designed the rehabilitation for six bridges at the US Army Garrison at Fort Belvoir and performed an in depth inspection of the structures, some which involved maintenance of traffic. While most of the structures were accessible using a ladder from the ground, KCI was challenged with the inspection of a pony truss over a water way which was overcome by using a pontoon boat with adjustable scaffolding. Three of the structures, needing to be repainted, required KCI to first perform field testing to determine the presence of lead and the feasibility of over coating versus a complete cleaning and painting. Field testing was also performed on one of the steel girder bridges to determine the feasibility of repairing or replacing substructure units.
Following the field investigations, KCI prepared plans, specifications and cost estimates for the rehabilitation of the six bridges. The rehabilitations included cleaning and painting of the pony truss, one steel girder bridge, and the handrail of the pedestrian bridge, minor steel repairs, joint repairs/replacements, drainage trough repairs, bearing repairs, crack sealing by epoxy injection, sealing approach roadway bituminous wearing surfaces, a sidewalk replacement at the pony truss, repairing subsurface units with pneumatically applied mortar, installing safety fences, and upgrading the bridge and approach railings at the four vehicular bridges. Plans also included conversion of an abandoned railroad bridge to accommodate a hiker/biker trail. Maintenance of traffic and detour plans were prepared for each site.
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