US Bridges

FM 308 over Lake Branch

Fair

Hill County, Texas · 3.4 MI S of SH 171 · Structure no. 091100083403010

Built
1949
76 years old, rebuilt 1962
Condition
Fair
inspected January 2023
Type
Culvert
Concrete
Length
26 ft
4 main spans
Daily traffic
740
2020 count
Owner
State
State Highway Agency

About this bridge

FM 308 over Lake Branch is a concrete culvert carrying FM 308 over Lake Branch in Hill County, Texas. It was built in 1949 and reconstructed in 1962, so it is 76 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 740 vehicles a day, roughly 7% of them trucks, projected to reach 1,530 by 2033. The structure is 26 ft (7.9 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesFM 308
CrossesLake Branch
Location3.4 MI S of SH 171
RouteState Highway 308
CountyHill County
StateTexas
Coordinates31.87129, -96.91963
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating26 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans4
Design loadH 15
Structure length26 ft (7.9 m)
Longest span6 ft (1.8 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic740 (2020)
Projected traffic1,530 by 2033
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$400,000
NavigationNo navigation control on waterway

Frequently asked questions

When was FM 308 over Lake Branch built?

It was built in 1949, making it 76 years old in 2025. It was reconstructed in 1962.

What condition is FM 308 over Lake Branch 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 January 2023.

How much traffic does FM 308 over Lake Branch carry?

About 740 vehicles per day (2020 count), of which roughly 7% are trucks.

How long is FM 308 over Lake Branch?

The structure is 26 ft (7.9 m) long with a longest span of 6 ft (1.8 m).

Who owns FM 308 over Lake Branch?

It is owned by the State Highway Agency.