Photos 

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Overview

Photos taken by Vitaly Altoiz
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Approach

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Photo taken by Patrick Sparks

Map 

Vicinity Map

Vicinity map

Map links:

Facts 

Overview
Whipple through truss bridge over railroad tracks on Hays Street in San Antonio
Location
San Antonio, Bexar County, Texas
Status
Closed to all traffic
History
Built 1908
Design
Whipple through truss
Dimensions
Length of largest span: 228.0 ft.
Total length: 1,202.2 ft.
Deck width: 23.0 ft.
Vertical clearance above deck: 22.0 ft.
Recognition
Eligible for the National Register of Historic Places
Approximate latitude, longitude
+29.43000, -98.47556   (decimal degrees)
29°25'48" N, 98°28'32" W   (degrees°minutes'seconds")
Approximate UTM coordinates
14/550868/3255741 (zone/easting/northing)
USGS topographic map
San Antonio East
Inventory number
BH 32776 (Bridgehunter.com ID)
Average daily traffic (as of 2000)
440

Categories 

Bexar County, Texas (17)
Built 1908 (257)
Built during 1900s (2,521)
Closed (1,662)
NR-eligible (2,625)
Owned by city (2,011)
San Antonio, Texas (11)
Span length 175-250 feet (1,040)
Structurally deficient (12,078)
Texas (886)
Through truss (5,569)
Total length 1000-2500 feet (733)
Truss (16,288)
Whipple truss (60)

Update Log 

Sources 

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Comments 

Hays Street Bridge
Posted February 5, 2007, by Patrick Sparks (psparks [at] sparksengineering [dot] com)

The 1881/1910 Hays Street Bridge is a viaduct consisting of two wrought iron truss spans (one Phoenix Whipple 225-ft span, and one Pratt 130-ft span), and approximately 1000-LF of concrete approaches.

In 1910, the City of San Antonio required the Galveston, Harrisburg & San Antonio Railway Co. (eventually part of Southern Pacific) to construct a viaduct over the railroad tracks at Hays Street. The railway company relocated the two truss spans from elsewhere on its lines.

Records of the Phoenix Bridge Company archived at the Hagley Library in Wilmington, Delaware show that the Whipple truss dates from 1881 and was reconstructed from one or more salvaged spans over the Nueces River west of San Antonio. These records include entries in the company’s customer index as well as copies of the 1910 repair shop drawings showing replacement joint blocks, bearing seats, and lateral bracing struts.

The Whipple truss span is a Phoenix patent design using the now rare Phoenix segmental wrought iron columns with cast-iron joint blocks. The Pratt span has Phoenix-branded components, including the floor beams. Both spans were widened in 1910 from about 16-feet to the current 25-feet.

The bridge is planned for rehabilitation as a bicycle and pedestrian facility by the City of San Antonio, using a Transportation Enhancement grant from the Texas Department of Transportation. Sparks Engineering, Inc. is the design consultant for the project. Plans and specifications were completed in November 2006 and the project is scheduled to begin construction in the spring of 2007.

Webmaster's note: The photo that was here has been incorporated into the main site.