US Bridges

SH 6 over Johnson Branch

Good

Bosque County, Texas · 0.8 MI S of SH 22 · Structure no. 090180025806049

Built
1940
85 years old, rebuilt 1964
Condition
Good
inspected December 2024
Type
Culvert
Concrete
Length
30 ft
3 main spans
Daily traffic
5,900
2023 count
Owner
State
State Highway Agency

About this bridge

SH 6 over Johnson Branch is a concrete culvert carrying SH 6 over Johnson Branch in Bosque County, Texas. It was built in 1940 and reconstructed in 1964, so it is 85 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 5,900 vehicles a day, roughly 14% of them trucks, projected to reach 11,092 by 2042. The structure is 30 ft (9.2 m) long. If it were closed, the detour would be 9.9 mi (16 km).

CarriesSH 6
CrossesJohnson Branch
Location0.8 MI S of SH 22
RouteState Highway 6
StateTexas
Coordinates31.90595, -97.66094
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 spans3
Design loadH 15
Structure length30 ft (9.2 m)
Longest span9 ft (2.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,900 (2023)
Projected traffic11,092 by 2042
Trucks14%
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$261,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SH 6 over Johnson Branch built?

It was built in 1940, making it 85 years old in 2025. It was reconstructed in 1964.

What condition is SH 6 over Johnson 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 Johnson Branch carry?

About 5,900 vehicles per day (2023 count), of which roughly 14% are trucks.

How long is SH 6 over Johnson Branch?

The structure is 30 ft (9.2 m) long with a longest span of 9 ft (2.7 m).

Who owns SH 6 over Johnson Branch?

It is owned by the State Highway Agency.