US Bridges

Lake Austin Blvd over 1st ST to Lp 1 SB Ramp

Good

Travis County, Texas · Lady Bird Lake Intchng · Structure no. 142270313601029

Built
1975
50 years old
Condition
Good
inspected September 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
193 ft
2 main spans
Daily traffic
122,710
2013 count
Owner
State
State Highway Agency

About this bridge

Lake Austin Blvd over 1st ST to Lp 1 SB Ramp is a prestressed concrete stringer/multi-beam or girder carrying Lake Austin Blvd over 1st ST to Lp 1 SB Ramp in Travis County, Texas. It was built in 1975, so it is 50 years old, older 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 122,710 vehicles a day, roughly 2% of them trucks, projected to reach 171,790 by 2033. The structure is 193 ft (58.8 m) long and 99 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesLake Austin Blvd
Crosses1st ST to Lp 1 SB Ramp
LocationLady Bird Lake Intchng
RouteState Highway 1
CountyTravis County
StateTexas
Coordinates30.27716, -97.76999
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.
Last inspectionSeptember 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
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 length193 ft (58.8 m)
Longest span77 ft (23.5 m)
Deck width99 ft (30.1 m)
Roadway width72 ft (21.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic122,710 (2013)
Projected traffic171,790 by 2033
Trucks2%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
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 statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Lake Austin Blvd over 1st ST to Lp 1 SB Ramp built?

It was built in 1975, making it 50 years old in 2025.

What condition is Lake Austin Blvd over 1st ST to Lp 1 SB Ramp 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 Lake Austin Blvd over 1st ST to Lp 1 SB Ramp carry?

About 122,710 vehicles per day (2013 count), of which roughly 2% are trucks.

How long is Lake Austin Blvd over 1st ST to Lp 1 SB Ramp?

The structure is 193 ft (58.8 m) long with a longest span of 77 ft (23.5 m) and a deck 99 ft wide.

Who owns Lake Austin Blvd over 1st ST to Lp 1 SB Ramp?

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