US Bridges

SH 6 NB over Walnut Creek Relief No 1

Fair

Robertson County, Texas · 0.4 MI S of FM 2159 · Structure no. 171980004906062

Built
1951
74 years old, rebuilt 1976
Condition
Fair
inspected November 2024
Type
Slab
Concrete Continuous
Length
300 ft
12 main spans
Daily traffic
5,051
2023 count
Owner
State
State Highway Agency

About this bridge

SH 6 NB over Walnut Creek Relief No 1 is a concrete continuous slab carrying SH 6 NB over Walnut Creek Relief No 1 in Robertson County, Texas. It was built in 1951 and reconstructed in 1976, so it is 74 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 5 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 5,051 vehicles a day, roughly 38% of them trucks, projected to reach 8,688 by 2042. The structure is 300 ft (91.4 m) long and 50 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSH 6 NB
CrossesWalnut Creek Relief No 1
Location0.4 MI S of FM 2159
RouteState Highway 6
CountyRobertson County
StateTexas
Coordinates31.01491, -96.70463
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating42 US tons
Inventory rating25 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans12
Design loadOther
Structure length300 ft (91.4 m)
Longest span25 ft (7.6 m)
Deck width50 ft (15.3 m)
Roadway width48 ft (14.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,051 (2023)
Projected traffic8,688 by 2042
Trucks38%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesRelief for waterway
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SH 6 NB over Walnut Creek Relief No 1 built?

It was built in 1951, making it 74 years old in 2025. It was reconstructed in 1976.

What condition is SH 6 NB over Walnut Creek Relief No 1 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 November 2024.

How much traffic does SH 6 NB over Walnut Creek Relief No 1 carry?

About 5,051 vehicles per day (2023 count), of which roughly 38% are trucks.

How long is SH 6 NB over Walnut Creek Relief No 1?

The structure is 300 ft (91.4 m) long with a longest span of 25 ft (7.6 m) and a deck 50 ft wide.

Who owns SH 6 NB over Walnut Creek Relief No 1?

It is owned by the State Highway Agency.