US Bridges

FM 979 over Little Brazos River

Fair

Robertson County, Texas · 3.3 MI W of SH 6 · Structure no. 171980121002004

Built
1956
69 years old
Condition
Fair
inspected November 2024
Type
Slab
Concrete
Length
200 ft
8 main spans
Daily traffic
704
2023 count
Owner
State
State Highway Agency

About this bridge

FM 979 over Little Brazos River is a concrete slab carrying FM 979 over Little Brazos River in Robertson County, Texas. It was built in 1956, so it is 69 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 704 vehicles a day, roughly 9% of them trucks, projected to reach 986 by 2042. The structure is 200 ft (61 m) long and 25 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesFM 979
CrossesLittle Brazos River
Location3.3 MI W of SH 6
RouteState Highway 979
StateTexas
Coordinates30.98051, -96.73158
Functional classRural Minor 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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56 US tons
Inventory rating29 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans8
Design loadOther
Structure length200 ft (61 m)
Longest span25 ft (7.6 m)
Deck width25 ft (7.7 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic704 (2023)
Projected traffic986 by 2042
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 979 over Little Brazos River built?

It was built in 1956, making it 69 years old in 2025.

What condition is FM 979 over Little Brazos River 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 November 2024.

How much traffic does FM 979 over Little Brazos River carry?

About 704 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is FM 979 over Little Brazos River?

The structure is 200 ft (61 m) long with a longest span of 25 ft (7.6 m) and a deck 25 ft wide.

Who owns FM 979 over Little Brazos River?

It is owned by the State Highway Agency.