US Bridges

Lp 1 NB over Colorado River & UPRR

Fair

Travis County, Texas · 0.70 MI N of RM 2244 · Structure no. 142270313601018

Built
1973
52 years old, rebuilt 1982
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
4,222 ft
36 main spans
Daily traffic
90,915
2019 count
Owner
State
State Highway Agency

About this bridge

Lp 1 NB over Colorado River & UPRR is a prestressed concrete stringer/multi-beam or girder carrying Lp 1 NB over Colorado River & UPRR in Travis County, Texas. It was built in 1973 and reconstructed in 1982, so it is 52 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 90,915 vehicles a day, roughly 2% of them trucks, projected to reach 98,840 by 2036. The structure is 4,222 ft (1,286.9 m) long and 42 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesLp 1 NB
CrossesColorado River & UPRR
Location0.70 MI N of RM 2244
RouteState Highway 1
CountyTravis County
StateTexas
Coordinates30.27363, -97.77167
Functional classUrban Principal Arterial - Other Freeway or Expressway

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 inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating27 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans36 (+8 approach)
Design loadHS 20
Structure length4,222 ft (1,286.9 m)
Longest span125 ft (38.1 m)
Deck width42 ft (12.8 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic90,915 (2019)
Projected traffic98,840 by 2036
Trucks2%
Lanes on structure3
Traffic directionOne-way traffic
CarriesThird level (interchange)
CrossesHighway, waterway and railroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byLocal Toll Authority
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 Lp 1 NB over Colorado River & UPRR built?

It was built in 1973, making it 52 years old in 2025. It was reconstructed in 1982.

What condition is Lp 1 NB over Colorado River & UPRR 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 September 2023.

How much traffic does Lp 1 NB over Colorado River & UPRR carry?

About 90,915 vehicles per day (2019 count), of which roughly 2% are trucks.

How long is Lp 1 NB over Colorado River & UPRR?

The structure is 4,222 ft (1,286.9 m) long with a longest span of 125 ft (38.1 m) and a deck 42 ft wide.

Who owns Lp 1 NB over Colorado River & UPRR?

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