US Bridges

IH 37 over Mustang Hollow

Fair

Live Oak County, Texas · 4.6 MI N of San Pat CO LN · Structure no. 161490007402139

Built
1971
54 years old
Condition
Fair
inspected February 2024
Type
Culvert
Concrete
Length
38 ft
5 main spans
Daily traffic
17,510
2020 count
Owner
State
State Highway Agency

About this bridge

IH 37 over Mustang Hollow is a concrete culvert carrying IH 37 over Mustang Hollow in Live Oak County, Texas. It was built in 1971, so it is 54 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 17,510 vehicles a day, roughly 25% of them trucks, projected to reach 22,230 by 2033. The structure is 38 ft (11.5 m) long. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesIH 37
CrossesMustang Hollow
Location4.6 MI N of San Pat CO LN
RouteInterstate 37
CountyLive Oak County
StateTexas
Coordinates28.20711, -97.8933
Functional classRural 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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating26 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans5
Design loadHS 20
Structure length38 ft (11.5 m)
Longest span7 ft (2.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,510 (2020)
Projected traffic22,230 by 2033
Trucks25%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was IH 37 over Mustang Hollow built?

It was built in 1971, making it 54 years old in 2025.

What condition is IH 37 over Mustang Hollow 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 February 2024.

How much traffic does IH 37 over Mustang Hollow carry?

About 17,510 vehicles per day (2020 count), of which roughly 25% are trucks.

How long is IH 37 over Mustang Hollow?

The structure is 38 ft (11.5 m) long with a longest span of 7 ft (2.1 m).

Who owns IH 37 over Mustang Hollow?

It is owned by the State Highway Agency.