US Bridges

Spur 122 / US 181 over IH 37

Fair

Bexar County, Texas · 1.80 MI S of IH 410 · Structure no. 150150007308080

Built
1967
58 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
290 ft
4 main spans
Daily traffic
16,337
2016 count
Owner
State
State Highway Agency

About this bridge

Spur 122 / US 181 over IH 37 is a steel continuous stringer/multi-beam or girder carrying Spur 122 / US 181 over IH 37 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 16,337 vehicles a day, projected to reach 22,870 by 2036. The structure is 290 ft (88.4 m) long and 35 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesSpur 122 / US 181
CrossesIH 37
Location1.80 MI S of IH 410
RouteU.S. Route 181
StateTexas
Coordinates29.30759, -98.39934
Functional classUrban Other Principal Arterial

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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating62.9 US tons
Inventory rating38 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length290 ft (88.4 m)
Longest span80 ft (24.4 m)
Deck width35 ft (10.8 m)
Roadway width33 ft (10.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,337 (2016)
Projected traffic22,870 by 2036
Trucks0%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

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 Spur 122 / US 181 over IH 37 built?

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

What condition is Spur 122 / US 181 over IH 37 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 Spur 122 / US 181 over IH 37 carry?

About 16,337 vehicles per day (2016 count).

How long is Spur 122 / US 181 over IH 37?

The structure is 290 ft (88.4 m) long with a longest span of 80 ft (24.4 m) and a deck 35 ft wide.

Who owns Spur 122 / US 181 over IH 37?

It is owned by the State Highway Agency.