US Bridges

IH 37 SB over Drexel Boyer & UPRR

Fair

Bexar County, Texas · 0.50 MI N of IH 10 · Structure no. 150150007308034

Built
1967
58 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
847 ft
8 main spans
Daily traffic
134,157
2023 count
Owner
State
State Highway Agency

About this bridge

IH 37 SB over Drexel Boyer & UPRR is a steel continuous stringer/multi-beam or girder carrying IH 37 SB over Drexel Boyer & UPRR in Bexar County, Texas. It was built in 1967, so it is 58 years old, older than the Texas average of 44.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 134,157 vehicles a day, roughly 4% of them trucks, projected to reach 187,820 by 2042. The structure is 847 ft (258.2 m) long and 79 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesIH 37 SB
CrossesDrexel Boyer & UPRR
Location0.50 MI N of IH 10
RouteInterstate 37
CountyBexar County
StateTexas
Coordinates29.40191, -98.481
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57 US tons
Inventory rating34.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans8 (+5 approach)
Design loadHS 20
Structure length847 ft (258.2 m)
Longest span85 ft (25.9 m)
Deck width79 ft (24 m)
Roadway width77 ft (23.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic134,157 (2023)
Projected traffic187,820 by 2042
Trucks4%
Lanes on structure5
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was IH 37 SB over Drexel Boyer & UPRR built?

It was built in 1967, making it 58 years old in 2025.

What condition is IH 37 SB over Drexel Boyer & UPRR in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in July 2024.

How much traffic does IH 37 SB over Drexel Boyer & UPRR carry?

About 134,157 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is IH 37 SB over Drexel Boyer & UPRR?

The structure is 847 ft (258.2 m) long with a longest span of 85 ft (25.9 m) and a deck 79 ft wide.

Who owns IH 37 SB over Drexel Boyer & UPRR?

It is owned by the State Highway Agency.