US Bridges

IH 37 NB over Commerce ST

Fair

Bexar County, Texas · 1.80 MI N of IH 10 · Structure no. 150150007308267

Built
1972
53 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
230 ft
3 main spans
Daily traffic
76,499
2023 count
Owner
State
State Highway Agency

About this bridge

IH 37 NB over Commerce ST is a steel continuous stringer/multi-beam or girder carrying IH 37 NB over Commerce ST in Bexar County, Texas. It was built in 1972, so it is 53 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 76,499 vehicles a day, roughly 4% of them trucks, projected to reach 107,098 by 2042. The structure is 230 ft (70.1 m) long and 85 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesIH 37 NB
CrossesCommerce ST
Location1.80 MI N of IH 10
RouteInterstate 37
CountyBexar County
StateTexas
Coordinates29.42201, -98.48056
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65 US tons
Inventory rating41 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length230 ft (70.1 m)
Longest span90 ft (27.4 m)
Deck width85 ft (26 m)
Roadway width79 ft (24.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic76,499 (2023)
Projected traffic107,098 by 2042
Trucks4%
Lanes on structure5
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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 NB over Commerce ST built?

It was built in 1972, making it 53 years old in 2025.

What condition is IH 37 NB over Commerce ST 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 August 2024.

How much traffic does IH 37 NB over Commerce ST carry?

About 76,499 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is IH 37 NB over Commerce ST?

The structure is 230 ft (70.1 m) long with a longest span of 90 ft (27.4 m) and a deck 85 ft wide.

Who owns IH 37 NB over Commerce ST?

It is owned by the State Highway Agency.