US Bridges

SH 6 over Preston Branch

Good

Bosque County, Texas · 0.4 MI E of FM 56 · Structure no. 090180025807062

Built
1931
94 years old, rebuilt 1962
Condition
Good
inspected December 2024
Type
Culvert
Concrete
Length
63 ft
4 main spans
Daily traffic
8,903
2023 count
Owner
State
State Highway Agency

About this bridge

SH 6 over Preston Branch is a concrete culvert carrying SH 6 over Preston Branch in Bosque County, Texas. It was built in 1931 and reconstructed in 1962, so it is 94 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 8,903 vehicles a day, roughly 16% of them trucks, projected to reach 10,760 by 2033. The structure is 63 ft (19.1 m) long and 67 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesSH 6
CrossesPreston Branch
Location0.4 MI E of FM 56
RouteState Highway 6
StateTexas
Coordinates31.65664, -97.46346
Functional classRural Principal Arterial - Other

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 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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans4
Design loadUnknown
Structure length63 ft (19.1 m)
Longest span10 ft (3 m)
Deck width67 ft (20.5 m)
Roadway width58 ft (17.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,903 (2023)
Projected traffic10,760 by 2033
Trucks16%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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$392,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SH 6 over Preston Branch built?

It was built in 1931, making it 94 years old in 2025. It was reconstructed in 1962.

What condition is SH 6 over Preston 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 December 2024.

How much traffic does SH 6 over Preston Branch carry?

About 8,903 vehicles per day (2023 count), of which roughly 16% are trucks.

How long is SH 6 over Preston Branch?

The structure is 63 ft (19.1 m) long with a longest span of 10 ft (3 m) and a deck 67 ft wide.

Who owns SH 6 over Preston Branch?

It is owned by the State Highway Agency.