US Bridges

SH 6 over Tennant Branch

Fair

McLennan County, Texas · 0.7 MI SE of FM 185 · Structure no. 091610025808029

Built
1932
93 years old, rebuilt 1961
Condition
Fair
inspected December 2024
Type
Culvert
Concrete
Length
44 ft
4 main spans
Daily traffic
20,996
2023 count
Owner
State
State Highway Agency

About this bridge

SH 6 over Tennant Branch is a concrete culvert carrying SH 6 over Tennant Branch in McLennan County, Texas. It was built in 1932 and reconstructed in 1961, so it is 93 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 20,996 vehicles a day, roughly 11% of them trucks, projected to reach 31,494 by 2042. The structure is 44 ft (13.4 m) long and 53 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSH 6
CrossesTennant Branch
Location0.7 MI SE of FM 185
RouteState Highway 6
CountyMcLennan County
StateTexas
Coordinates31.57735, -97.29525
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 protection8 Very GoodNo problems noted.
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 evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: 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
DeckConcrete, cast-in-place
Main spans4
Design loadH 15
Structure length44 ft (13.4 m)
Longest span10 ft (3 m)
Deck width53 ft (16.2 m)
Roadway width41 ft (12.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,996 (2023)
Projected traffic31,494 by 2042
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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$400,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SH 6 over Tennant Branch built?

It was built in 1932, making it 93 years old in 2025. It was reconstructed in 1961.

What condition is SH 6 over Tennant 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 Tennant Branch carry?

About 20,996 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is SH 6 over Tennant Branch?

The structure is 44 ft (13.4 m) long with a longest span of 10 ft (3 m) and a deck 53 ft wide.

Who owns SH 6 over Tennant Branch?

It is owned by the State Highway Agency.