US Bridges

FM 140 over San Miguel Creek

Fair

Frio County, Texas · 2.40 MI W of FM 472 · Structure no. 150830074801002

Built
1947
78 years old, rebuilt 1968
Condition
Fair
inspected July 2024
Type
Slab
Concrete
Length
125 ft
5 main spans
Daily traffic
794
2020 count
Owner
State
State Highway Agency

About this bridge

FM 140 over San Miguel Creek is a concrete slab carrying FM 140 over San Miguel Creek in Frio County, Texas. It was built in 1947 and reconstructed in 1968, so it is 78 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 794 vehicles a day, roughly 31% of them trucks, projected to reach 1,940 by 2033. The structure is 125 ft (38.1 m) long and 36 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

CarriesFM 140
CrossesSan Miguel Creek
Location2.40 MI W of FM 472
RouteState Highway 140
StateTexas
Coordinates28.90457, -98.90931
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61 US tons
Inventory rating36 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans5
Design loadH 15
Structure length125 ft (38.1 m)
Longest span25 ft (7.6 m)
Deck width36 ft (11.1 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic794 (2020)
Projected traffic1,940 by 2033
Trucks31%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 km)
TollOn a free road
National Highway SystemNo

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 FM 140 over San Miguel Creek built?

It was built in 1947, making it 78 years old in 2025. It was reconstructed in 1968.

What condition is FM 140 over San Miguel Creek 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 FM 140 over San Miguel Creek carry?

About 794 vehicles per day (2020 count), of which roughly 31% are trucks.

How long is FM 140 over San Miguel Creek?

The structure is 125 ft (38.1 m) long with a longest span of 25 ft (7.6 m) and a deck 36 ft wide.

Who owns FM 140 over San Miguel Creek?

It is owned by the State Highway Agency.