Title: Custom Stone Look for Concrete Arches of Coton Bridge

Author(s): M.K. Hurd

Publication: Concrete International

Volume: 25

Issue: 2

Appears on pages(s): 43-46

Keywords:

DOI:

Date: 2/1/2003

Abstract:
The 446-ft (140 m) long Coton Bridge over Goose Creek in Northern Virginia showcases state-of-the-art engineering while addressing a long list of environmental and historical considerations. Nine spans made up of precast arch-box sections were installed on cast-in-place piers, traversing a flood plain with the underside of the arches as much as 35 ft (11 m) above normal water level. Much of the work was done within coffer dams to minimize disturbance of the stream bottom. Custom form-liners were used to produce precast headwalls and bridge parapets resembling the stone masonry in nearby historic structures. The stone simulation was further enhanced by multiple coats of penetrating stain, varying the hues from “stone to stone.”