US Bridges

SH 261 over Red Rock Creek

Fair

Llano County, Texas · 6.70 MI N of SH 29 · Structure no. 141500054701001

Built
1938
87 years old
Condition
Fair
inspected May 2023
Type
Slab
Concrete
Length
100 ft
5 main spans
Daily traffic
1,199
2020 count
Owner
State
State Highway Agency

About this bridge

SH 261 over Red Rock Creek is a concrete slab carrying SH 261 over Red Rock Creek in Llano County, Texas. It was built in 1938, so it is 87 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 1,199 vehicles a day, roughly 7% of them trucks, projected to reach 2,502 by 2039. The structure is 100 ft (30.5 m) long and 26 ft wide. If it were closed, the detour would be 28 mi (45 km).

Location

Open in Google Maps
CarriesSH 261
CrossesRed Rock Creek
Location6.70 MI N of SH 29
RouteState Highway 261
CountyLlano County
StateTexas
Coordinates30.81479, -98.47341
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70 US tons
Inventory rating42 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans5
Design loadH 15
Structure length100 ft (30.5 m)
Longest span20 ft (6.1 m)
Deck width26 ft (7.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,199 (2020)
Projected traffic2,502 by 2039
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed28 mi (45 km)
TollOn a free road
National Highway SystemNo

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 261 over Red Rock Creek built?

It was built in 1938, making it 87 years old in 2025.

What condition is SH 261 over Red Rock Creek 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 May 2023.

How much traffic does SH 261 over Red Rock Creek carry?

About 1,199 vehicles per day (2020 count), of which roughly 7% are trucks.

How long is SH 261 over Red Rock Creek?

The structure is 100 ft (30.5 m) long with a longest span of 20 ft (6.1 m) and a deck 26 ft wide.

Who owns SH 261 over Red Rock Creek?

It is owned by the State Highway Agency.