United States Department of Transportation
ROSA P serves as an archival repository of USDOT-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by USDOT or funded partners.
As a repository, ROSA P retains documents in their original published format to ensure public access to scientific information.
i
Texas: Louetta Road Overpass, State Highway 249, Houston
-
2000-08-01
[PDF-53.21 KB]
Details:
-
Corporate Creators:
-
Subject/TRT Terms:
-
Publication/ Report Number:
-
Resource Type:
-
Geographical Coverage:
-
Corporate Publisher:
-
Abstract:Texas State Highway 249 was upgraded from a four-lane, at-grade road to a limited-access freeway. Consequently, two overpass structures have been built at Louetta Road to carry three lanes in each direction, plus shoulders and ramp transitions. The bridges are three spans each, nominally 40 m (130 ft) per span. Beams are pretensioned and are U-shaped. At the interior bents, each beam is supported by a single post-tensioned pier. All beams and piers were designed and fabricated using high-performance/high-strength concrete. The composite decks are precast concrete subdeck panels with cast-in-place concrete topping. For comparison purposes, the southbound main-lane bridge has a high-performance/high-strength cast-in-place concrete deck, whereas the northbound main-lane bridge has a high-performance/normal-strength cast-in-place concrete deck. High-performance concrete in the beam design allowed simple-span construction for this overpass. Otherwise, a more complicated and costly superstructure and/or substructure design would have been required due to the underneath-roadway constraints. Aesthetics were considered, and the U-beams with a single pier per widely spaced beam offer an attractive alternative to typical designs.
-
Format:
-
Collection(s):
-
Main Document Checksum:
-
Download URL:
-
File Type:
