1 vote

UP - St. Mary's Street Underpass (N)


UP(T&NO)-over Underpass Rd

Looking NE

Photo taken by Royce and Bobette Haley in July 2014


BH Photo #289573


Street View 


Deck plate girder over St. Mary's Street on UP (T&NO) Railroad
San Antonio, Bexar County, Texas
Open to traffic
Built 1936 for the T&NO Railroad
- Central Bitulithic Construction Co. of Dallas, Texas (contractors)
- Gibb Gilchrist of Wills Point, Texas (engineer)
- Southern Pacific Railroad (SP)
- Texas & New Orleans Railroad (TNO)
- Union Pacific Railroad (UP)
Deck plate girder with outriggers
Span length: 47.9 ft.
Total length: 47.9 ft.
Deck width: 25.0 ft.
Skew angle
10 degrees
Also called
T&NO Overpass
Approximate latitude, longitude
+29.40273, -98.48611   (decimal degrees)
29°24'10" N, 98°29'10" W   (degrees°minutes'seconds")
Approximate UTM coordinates
14/549857/3252716 (zone/easting/northing)
Quadrangle map:
San Antonio East
Inventory numbers
TXNBI 150150B30135002 (Texas bridge number on the National Bridge Inventory)

BH 61997 (Bridgehunter.com ID)

Update Log 

  • August 4, 2014: New photos from Royce and Bobette Haley
  • July 29, 2014: Updated by Royce and Bobette Haley: changed to north
  • July 26, 2014: Updated by Luke: Added category ""Truck-Eating""
  • July 26, 2014: Updated by Royce and Bobette Haley: Changed street name-St. Mary's is incorrect


  • Royce and Bobette Haley - roycehaley111 [at] yahoo [dot] com


UP (T&NO) RR-Underpass Rd Bridge
Posted July 26, 2014, by Royce and Bobette Haley (roycehaley111 [at] yahoo [dot] com)


Well I don't share in your trust of our local news to get things right and as I said the nearest street sign does say S St Mary's the fact that the addresses it touts are a half block east doesn't really surprise me in this city or any for that matter. I suffer through a constant onslaught of misinformation from even respectable sources these days. But that is neither here nor there. As I said there is nothing on that stretch of road addressed as S St Mary's so either the city or the US Post Office is wrong and really its a toss up as to which one. But in the end It doesn't really matter I don't mind if there are Two S St Mary's with Two Train Crossings of the same track within 250 feet of each other or that there are also two Roosevelt Aves. S St Mary's it is! Check out a Satellite map of the area and get a kick out of it.


UP (T&NO) RR-Underpass Rd Bridge
Posted July 26, 2014, by Luke

Considering that local news stations refer to it as St. Marys Street ( http://www.ksat.com/content/pns/ksat/news/2014/06/24/big-rig... ), I think we should just call it "St. Marys Street Underpass".

That's just my two cents, though

UP (T&NO) RR-Underpass Rd Bridge
Posted July 26, 2014, by Royce and Bobette Haley (roycehaley111 [at] yahoo [dot] com)

Sorry didn't say. The reason I went with Underpass Rd was because of the continuous addressing of S St Mary's street in the original alignment if you will. Which is as I said a half block to the east.

let me know what you think


UP (T&NO) RR-Underpass Rd Bridge
Posted July 26, 2014, by Royce and Bobette Haley (roycehaley111 [at] yahoo [dot] com)

I agree the NBI says it is S. St. Mary's. And because of the backwards signage put on the Streets it appears that way. However I live here and S. St. Mary's actually runs straight at the intersection north of the underpass. The Street names are clearly posted on the streets as you can easily see on a mapping program. The U. S. Post office uses the "correct" street which is actually half a block to the East. The real, if you will, S ST Mary's turns into Roosevelt Ave at the tracks a half block to the east. Roosevelt is also miss signed at this point. In essence creating two S St Mary's and two Roosevelt Aves. running parallel to each other. The US Post office address the actual S St Mary's Street half a bock to the East of this underpass in question, which BTW has a RR crossing there but no bridge. The confusion I believe happened when they were resurfacing Streets in the area possibly contemplating a street realignment due to a park that was upgraded there a while back. But that is just a guess. Bottom line is that S ST Mary's is clearly addressed with continuous Street numbers half a block to the East. So What do we think? is it Underpass or S St Mary's?

UP (T&NO) RR-Underpass Rd Bridge
Posted July 26, 2014, by Luke

Actually, according to the NBI, St. Mary's is indeed correct