US Bridges

FM 791 over Salt Branch

Good

McMullen County, Texas · 4.20 M E of SH 16 · Structure no. 151620173904002

Built
1967
58 years old, rebuilt 2014
Condition
Good
inspected July 2024
Type
Culvert
Concrete
Length
26 ft
3 main spans
Daily traffic
800
2023 count
Owner
State
State Highway Agency

About this bridge

FM 791 over Salt Branch is a concrete culvert carrying FM 791 over Salt Branch in McMullen County, Texas. It was built in 1967 and reconstructed in 2014, 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 800 vehicles a day, roughly 44% of them trucks, projected to reach 1,120 by 2042. The structure is 26 ft (7.9 m) long and 46 ft wide. If it were closed, the detour would be 26.1 mi (42 km).

CarriesFM 791
CrossesSalt Branch
Location4.20 M E of SH 16
RouteState Highway 791
StateTexas
Coordinates28.62749, -98.47705
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 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 geometry9: Superior to present desirable criteria
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating26 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length26 ft (7.9 m)
Longest span8 ft (2.4 m)
Deck width46 ft (13.9 m)
Roadway width43 ft (13.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic800 (2023)
Projected traffic1,120 by 2042
Trucks44%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed26.1 mi (42 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 791 over Salt Branch built?

It was built in 1967, making it 58 years old in 2025. It was reconstructed in 2014.

What condition is FM 791 over Salt Branch in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2024.

How much traffic does FM 791 over Salt Branch carry?

About 800 vehicles per day (2023 count), of which roughly 44% are trucks.

How long is FM 791 over Salt Branch?

The structure is 26 ft (7.9 m) long with a longest span of 8 ft (2.4 m) and a deck 46 ft wide.

Who owns FM 791 over Salt Branch?

It is owned by the State Highway Agency.