US Bridges

CR 340 over Opossum Creek

Good

Williamson County, Texas · 0.90 MI S of FM 971 · Structure no. 142460AA0285001

Built
1991
34 years old
Condition
Good
inspected November 2023
Type
Stringer/Multi-beam or Girder
Concrete
Length
152 ft
5 main spans
Daily traffic
90
2010 count
Owner
County
County Highway Agency

About this bridge

CR 340 over Opossum Creek is a concrete stringer/multi-beam or girder carrying CR 340 over Opossum Creek in Williamson County, Texas. It was built in 1991, so it is 34 years old, younger 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 90 vehicles a day, projected to reach 300 by 2030. The structure is 152 ft (46.3 m) long and 26 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesCR 340
CrossesOpossum Creek
Location0.90 MI S of FM 971
RouteCounty Highway 340
CountyWilliamson County
StateTexas
Coordinates30.69041, -97.47957
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length152 ft (46.3 m)
Longest span30 ft (9.1 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic90 (2010)
Projected traffic300 by 2030
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was CR 340 over Opossum Creek built?

It was built in 1991, making it 34 years old in 2025.

What condition is CR 340 over Opossum Creek 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 November 2023.

How much traffic does CR 340 over Opossum Creek carry?

About 90 vehicles per day (2010 count).

How long is CR 340 over Opossum Creek?

The structure is 152 ft (46.3 m) long with a longest span of 30 ft (9.1 m) and a deck 26 ft wide.

Who owns CR 340 over Opossum Creek?

It is owned by the County Highway Agency.