US Bridges

Lp 1 NB FR over Walnut Creek

Good

Travis County, Texas · 2.8 MI N of US 183 · Structure no. 142270313601069

Built
1989
36 years old
Condition
Good
inspected September 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
225 ft
3 main spans
Daily traffic
4,372
2023 count
Owner
State
State Highway Agency

About this bridge

Lp 1 NB FR over Walnut Creek is a prestressed concrete stringer/multi-beam or girder carrying Lp 1 NB FR over Walnut Creek in Travis County, Texas. It was built in 1989, so it is 36 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 4,372 vehicles a day, roughly 1% of them trucks, projected to reach 10,540 by 2033. The structure is 225 ft (68.6 m) long and 60 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesLp 1 NB FR
CrossesWalnut Creek
Location2.8 MI N of US 183
RouteState Highway 1
CountyTravis County
StateTexas
Coordinates30.40972, -97.71101
Functional classUrban Collector

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 inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than 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 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 spans3
Design loadHS 20
Structure length225 ft (68.6 m)
Longest span80 ft (24.4 m)
Deck width60 ft (18.3 m)
Roadway width52 ft (15.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,372 (2023)
Projected traffic10,540 by 2033
Trucks1%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byLocal Toll Authority
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 FR over Walnut Creek built?

It was built in 1989, making it 36 years old in 2025.

What condition is Lp 1 NB FR over Walnut 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 September 2023.

How much traffic does Lp 1 NB FR over Walnut Creek carry?

About 4,372 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is Lp 1 NB FR over Walnut Creek?

The structure is 225 ft (68.6 m) long with a longest span of 80 ft (24.4 m) and a deck 60 ft wide.

Who owns Lp 1 NB FR over Walnut Creek?

It is owned by the State Highway Agency and maintained by the Local Toll Authority.