US Bridges

Lp 1 NB & SB over Williamson Creek

Good

Travis County, Texas · 1.0 MI SW of US 290 · Structure no. 142270313601129

Built
2005
20 years old
Condition
Good
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
225 ft
2 main spans
Daily traffic
89,571
2022 count
Owner
State
State Highway Agency

About this bridge

Lp 1 NB & SB over Williamson Creek is a prestressed concrete stringer/multi-beam or girder carrying Lp 1 NB & SB over Williamson Creek in Travis County, Texas. It was built in 2005, so it is 20 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 89,571 vehicles a day, roughly 3% of them trucks, projected to reach 125,399 by 2042. The structure is 225 ft (68.6 m) long and 126 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesLp 1 NB & SB
CrossesWilliamson Creek
Location1.0 MI SW of US 290
RouteState Highway 1
CountyTravis County
StateTexas
Coordinates30.22395, -97.83355
Functional classUrban Principal Arterial - Other Freeway or Expressway

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 inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2 (+1 approach)
Design loadHS 20
Structure length225 ft (68.6 m)
Longest span87 ft (26.5 m)
Deck width126 ft (38.4 m)
Roadway width122 ft (37.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic89,571 (2022)
Projected traffic125,399 by 2042
Trucks3%
Lanes on structure7
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 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 Lp 1 NB & SB over Williamson Creek built?

It was built in 2005, making it 20 years old in 2025.

What condition is Lp 1 NB & SB over Williamson 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 August 2024.

How much traffic does Lp 1 NB & SB over Williamson Creek carry?

About 89,571 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is Lp 1 NB & SB over Williamson Creek?

The structure is 225 ft (68.6 m) long with a longest span of 87 ft (26.5 m) and a deck 126 ft wide.

Who owns Lp 1 NB & SB over Williamson Creek?

It is owned by the State Highway Agency.