US Bridges

US 183 NB over Lp 1

Fair

Travis County, Texas · US 183 / Lp 1 Interchange · Structure no. 142270015106083

Built
1991
34 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
385 ft
3 main spans
Daily traffic
68,521
2019 count
Owner
State
State Highway Agency

About this bridge

US 183 NB over Lp 1 is a prestressed concrete stringer/multi-beam or girder carrying US 183 NB over Lp 1 in Travis 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 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 68,521 vehicles a day, roughly 2% of them trucks, projected to reach 102,380 by 2033. The structure is 385 ft (117.3 m) long and 70 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesUS 183 NB
CrossesLp 1
LocationUS 183 / Lp 1 Interchange
RouteU.S. Route 183
CountyTravis County
StateTexas
Coordinates30.37979, -97.73799
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.
Last inspectionAugust 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to 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 length385 ft (117.3 m)
Longest span132 ft (40.2 m)
Deck width70 ft (21.3 m)
Roadway width67 ft (20.4 m)
Vertical clearance over deck17 ft (5.2 m)

Traffic and service

Average daily traffic68,521 (2019)
Projected traffic102,380 by 2033
Trucks2%
Lanes on structure4
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 183 NB over Lp 1 built?

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

What condition is US 183 NB over Lp 1 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 August 2023.

How much traffic does US 183 NB over Lp 1 carry?

About 68,521 vehicles per day (2019 count), of which roughly 2% are trucks.

How long is US 183 NB over Lp 1?

The structure is 385 ft (117.3 m) long with a longest span of 132 ft (40.2 m) and a deck 70 ft wide.

Who owns US 183 NB over Lp 1?

It is owned by the State Highway Agency.