US Bridges

LP1 Sbfr to LP1 SB over Johnson Ck;lk Aus Bl;rmp

Good

Travis County, Texas · Lady Bird Lake Intchng · Structure no. 142270313601035

Built
1982
43 years old
Condition
Good
inspected September 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
822 ft
10 main spans
Daily traffic
11,310
2020 count
Owner
State
State Highway Agency

About this bridge

LP1 Sbfr to LP1 SB over Johnson Ck;lk Aus Bl;rmp is a prestressed concrete stringer/multi-beam or girder carrying LP1 Sbfr to LP1 SB over Johnson Ck;lk Aus Bl;rmp in Travis County, Texas. It was built in 1982, so it is 43 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 11,310 vehicles a day, roughly 2% of them trucks, projected to reach 19,760 by 2033. The structure is 822 ft (250.5 m) long and 30 ft wide.

CarriesLP1 Sbfr to LP1 SB
CrossesJohnson Ck;lk Aus Bl;rmp
LocationLady Bird Lake Intchng
RouteState Highway 1
StateTexas
Coordinates30.27792, -97.76919
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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
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 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

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans10
Design loadHS 20
Structure length822 ft (250.5 m)
Longest span95 ft (29 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,310 (2020)
Projected traffic19,760 by 2033
Trucks2%
Lanes on structure1
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway and waterway
Detour if closed—
TollOn a free road
National Highway SystemYes

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 LP1 Sbfr to LP1 SB over Johnson Ck;lk Aus Bl;rmp built?

It was built in 1982, making it 43 years old in 2025.

What condition is LP1 Sbfr to LP1 SB over Johnson Ck;lk Aus Bl;rmp 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 LP1 Sbfr to LP1 SB over Johnson Ck;lk Aus Bl;rmp carry?

About 11,310 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is LP1 Sbfr to LP1 SB over Johnson Ck;lk Aus Bl;rmp?

The structure is 822 ft (250.5 m) long with a longest span of 95 ft (29 m) and a deck 30 ft wide.

Who owns LP1 Sbfr to LP1 SB over Johnson Ck;lk Aus Bl;rmp?

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