US Bridges

Twin Creeks Drive over Onion Creek

Fair

Travis County, Texas · 0.60 MI W of Old S a RD · Structure no. 142270AA0107001

Built
1983
42 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Concrete
Length
365 ft
12 main spans
Daily traffic
4,981
2020 count
Owner
County
County Highway Agency

About this bridge

Twin Creeks Drive over Onion Creek is a concrete stringer/multi-beam or girder carrying Twin Creeks Drive over Onion Creek in Travis County, Texas. It was built in 1983, so it is 42 years old, younger 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 4,981 vehicles a day, projected to reach 2,800 by 2032. The structure is 365 ft (111.3 m) long and 31 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesTwin Creeks Drive
CrossesOnion Creek
Location0.60 MI W of Old S a RD
RouteCounty Highway 0
CountyTravis County
StateTexas
Coordinates30.12648, -97.82134
Functional classRural Local

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating36 US tons
Inventory rating27 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete
DeckConcrete, cast-in-place
Main spans12
Design loadUnknown
Structure length365 ft (111.3 m)
Longest span29 ft (8.9 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,981 (2020)
Projected traffic2,800 by 2032
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$691,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Twin Creeks Drive over Onion Creek built?

It was built in 1983, making it 42 years old in 2025.

What condition is Twin Creeks Drive over Onion 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 April 2024.

How much traffic does Twin Creeks Drive over Onion Creek carry?

About 4,981 vehicles per day (2020 count).

How long is Twin Creeks Drive over Onion Creek?

The structure is 365 ft (111.3 m) long with a longest span of 29 ft (8.9 m) and a deck 31 ft wide.

Who owns Twin Creeks Drive over Onion Creek?

It is owned by the County Highway Agency.