Rating:
3 votes

UP - Blanco River Bridge

Photos 

Photo taken by aaron leibold in March 2011

Enlarge

BH Photo #210703

Map 

Street View 

Facts 

Overview
Parker through truss bridge over Blanco River on Union Pacific Railroad
Location
San Marcos, Hays County, Texas
Status
Open to traffic
History
Built 1928
Builder
- Mosher Steel Co. of Dallas, Texas
Railroad
- Union Pacific Railroad (UP)
Design
Three section 400 ft long bridge. Center span is 200 ft 7-panel Parker Through Truss (Masher Steel of Dallas Tx 1928 plaque). Approach sections are a heavy riveted 8-panel Warren Polygonal Pony Truss with verticals and outriggers and a heavy riveted 7-panel Parker pony truss
Dimensions
Length of largest span: 200.0 ft.
Total length: 400.0 ft.
Deck width: 14.0 ft.
Also called
UP - San Marcos Bridge
Approximate latitude, longitude
+29.88495, -97.90654   (decimal degrees)
29°53'06" N, 97°54'24" W   (degrees°minutes'seconds")
Approximate UTM coordinates
14/605586/3306539 (zone/easting/northing)
Quadrangle map:
San Marcos North
Inventory number
BH 49421 (Bridgehunter.com ID)

Update Log 

  • June 29, 2014: New Street View added by Ralph Demars
  • June 28, 2014: Updated by Royce and Bobette Haley: the east approch was actually a parker pony truss not warren
  • August 26, 2011: Added by aaron leibold

Sources 

  • aaron leibold - aaron [dot] mightypenguin [at] gmail [dot] com
  • Royce and Bobette Haley - roycehaley111 [at] yahoo [dot] com