Bridgehunter.com | 20th Street Viaduct

Share:

Photos

Distant View Of Viaduct, Looking North

Photo taken by Historic American Engineering Record

Overview: Lost through truss and plate girder bridge over South Platte River and railyard on 20th Street in Denver
Location: Denver, Denver County, Colorado
Status: Replaced by new bridge
History: Built 1909-11; replaced 1994
Builders: - Herbert S. Crocker (Engineer)
- Milwaukee Bridge Co. of Milwaukee, Wisconsin (Superstructure)
Design: Warren through truss
Dimensions: Length of largest span: 166.0 ft.
Total length: 4,291.2 ft. (0.8 mi.)
Deck width: 34.1 ft.
Vertical clearance above deck: 17.1 ft.
Approximate latitude, longitude: +39.75833, -104.99667 (decimal degrees)
39°45'30" N, 104°59'48" W (degrees°minutes'seconds")
Approximate UTM coordinates: 13/500285/4400935 (zone/easting/northing)
USGS topographic map: Commerce City
Inventory numbers: CDOT D-03-V-050 (Colorado Dept. of Transportation structure number)
CO D-03-V-050 (Colorado off-system bridge number)
BH 41273 (Bridgehunter.com ID)
Inspection (as of 11/1990): Deck condition rating: Poor (4 out of 9)
Superstructure condition rating: Poor (4 out of 9)
Substructure condition rating: Fair (5 out of 9)
Appraisal: Structurally deficient
Sufficiency rating: 2.0 (out of 100)
Average daily traffic (as of 1986): 14,659

James Baughn - webmaster [at] bridgehunter [dot] com
HAER CO-51 - Twentieth Street Viaduct, Spans Platte River Valley between Thirty-third Ave, Denver, Denver County, CO