3 votes

Old Pleasanton Road - Medina River Bridge


3/4 View From S

Photo taken by Historic American Engineering Record

View photos at Library of Congress

BH Photo #118745


Street Views 


On January 20, 1910, the commissioners opened the bids for the Medina River Bridge project and selected the Birmingham, Alabama-based contractors H.B. Thompson and Company, whose $23,350.00 offer was the lowest. Upon selection, H.B. Thompson and Company, at the time preoccupied with a "large concrete contract" for the U.S. War Department in Pensacola, Florida, asked to extend the date of completion to August 4, 1910, for the purposes of allowing the poured concrete in each part of the bridge to attain greater strength. The commissioners, however, stuck with the original July 4 completion date so that the bridge could open in conjunction with an Independence Day celebration and a barbeque. Construction began on or around February 5, 1910. In the early spring, the flow of the Medina River had become unusually fierce due to heavy rains, and work was suspended on the bridge for as long as a week or ten days at a time. By July 4, 1910, the bridge was still very much under construction, although it should have been finished according to the stipulations of the contract. A county engineer working on the project at the time said it would be completed "sometime" in September 1910. It was not until January 24, 1911, however, that the Bexar County Commissioners made their final inspection, so it can only be definitively determined that the bridge opened to traffic between late July 1910, and late January 1911. Upon completion, this bridge became the first permanent span over the river at this location.


Open-Spandrel Concrete Arch Bridge over Medina River on Old Pleasanton Road
San Antonio, Bexar County, Texas
Intact but closed to all traffic
Built 1910; Bypassed 1985
- H.B. Thompson & Co. of Birmingham, Alabama (Contractor)
- The Terrell Bartlett Engineers Inc. of San Antonio, Texas (Designer)
This 303'-0"-long, four-span reinforced concrete arch bridge over the Medina River is one of the earliest documented concrete arch bridges in Texas. The bridge features open spandrels and two sets of ribs, and is probably the first bridge in Texas to feature this combination of material-saving devices.
Length of largest span: 110.0 ft.
Total length: 303.0 ft.
Deck width: 18.1 ft.
Also called
Earle Bridge
Cassin Bridge
Approximate latitude, longitude
+29.26412, -98.49112   (decimal degrees)
29°15'51" N, 98°29'28" W   (degrees°minutes'seconds")
Approximate UTM coordinates
14/549438/3237355 (zone/easting/northing)
Quadrangle map:
460 ft. above sea level
Inventory numbers
TXNBI 150150AA0717001 (Texas bridge number on the National Bridge Inventory)
BH 36964 (Bridgehunter.com ID)

Update Log 

  • July 31, 2020: New photo from Mark Gonzalez
  • June 26, 2020: New Street View added by Mark Gonzalez
  • May 7, 2018: New photos from Royce and Bobette Haley
  • April 3, 2010: Updated by Curtis Lee: added street view, elevation
  • August 12, 2009: Updated by C Hanchey: Added GPS coordinates
  • July 28, 2008: Added by James Baughn


  • HAER TX-52 - Medina River Bridge, Spanning Medina River at Pleasanton Road, San Antonio vicinity, Bexar County, TX
  • James Baughn - webmaster [at] bridgehunter [dot] com
  • C Hanchey - cmh2315fl [at] yahoo [dot] com
  • Curtis Lee - clee47ford [at] yahoo [dot] com
  • Royce and Bobette Haley - roycehaley111 [at] yahoo [dot] com
  • Mark Gonzalez - markgonzalez0619 [at] gmail [dot] com