US Bridges

SH 6 over Gibson Branch

Fair

Bosque County, Texas · 5.3 MI NW of SH 22 · Structure no. 090180025805012

Built
1935
90 years old, rebuilt 1968
Condition
Fair
inspected December 2024
Type
Culvert
Concrete
Length
44 ft
4 main spans
Daily traffic
3,661
2023 count
Owner
State
State Highway Agency

About this bridge

SH 6 over Gibson Branch is a concrete culvert carrying SH 6 over Gibson Branch in Bosque County, Texas. It was built in 1935 and reconstructed in 1968, so it is 90 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 3,661 vehicles a day, roughly 13% of them trucks, projected to reach 5,858 by 2042. The structure is 44 ft (13.4 m) long and 58 ft wide. If it were closed, the detour would be 31.1 mi (50 km).

Location

Open in Google Maps
CarriesSH 6
CrossesGibson Branch
Location5.3 MI NW of SH 22
RouteState Highway 6
CountyBosque County
StateTexas
Coordinates31.94933, -97.7457
Functional classRural Principal Arterial - Other

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 inspectionDecember 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 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
DeckConcrete, cast-in-place
Main spans4
Design loadH 15
Structure length44 ft (13.4 m)
Longest span10 ft (3 m)
Deck width58 ft (17.8 m)
Roadway width46 ft (14 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,661 (2023)
Projected traffic5,858 by 2042
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed31.1 mi (50 km)
TollOn a free road
National Highway SystemYes

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$261,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SH 6 over Gibson Branch built?

It was built in 1935, making it 90 years old in 2025. It was reconstructed in 1968.

What condition is SH 6 over Gibson 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 December 2024.

How much traffic does SH 6 over Gibson Branch carry?

About 3,661 vehicles per day (2023 count), of which roughly 13% are trucks.

How long is SH 6 over Gibson Branch?

The structure is 44 ft (13.4 m) long with a longest span of 10 ft (3 m) and a deck 58 ft wide.

Who owns SH 6 over Gibson Branch?

It is owned by the State Highway Agency.