R&M designed a bottomless arch culvert with aluminum headwalls and wingwalls to replace the aging, scour-critical Little Goldstream Creek Bridge. The crossing is located on a fish stream near Nenana. The bottomless arch concept was selected based on an alternatives analysis that developed 35% designs and cost estimates for three alternatives. The unusual bottomless arch structure best addressed difficult construction conditions and poor foundation soils at the site, which consisted of frozen silts. R&M performed a site visit, developed a flood frequency analysis, and assembled a hydraulic model to aid in the design of the culvert and associated erosion protection.
Replacement of the Little Goldstream Creek Bridge ensures continued access to nearby rural residences and agricultural lands.
Services for this Project
