US Bridges

Lp 1 SB Exit Ramp over Drain

Fair

Travis County, Texas · Lady Bird Lake Intchng · Structure no. 142270313601044

Built
1975
50 years old
Condition
Fair
inspected September 2023
Type
Culvert
Concrete
Length
41 ft
4 main spans
Daily traffic
16,250
2023 count
Owner
State
State Highway Agency

About this bridge

Lp 1 SB Exit Ramp over Drain is a concrete culvert carrying Lp 1 SB Exit Ramp over Drain 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 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 16,250 vehicles a day, roughly 2% of them trucks, projected to reach 19,760 by 2033. The structure is 41 ft (12.5 m) long.

CarriesLp 1 SB Exit Ramp
CrossesDrain
LocationLady Bird Lake Intchng
RouteState Highway 1
StateTexas
Coordinates30.28365, -97.76619
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
Channel and channel protection7 GoodSome minor problems.
Culvert6 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 evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating26 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans4
Design loadHS 20
Structure length41 ft (12.5 m)
Longest span8 ft (2.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,250 (2023)
Projected traffic19,760 by 2033
Trucks2%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 SB Exit Ramp over Drain built?

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

What condition is Lp 1 SB Exit Ramp over Drain 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 SB Exit Ramp over Drain carry?

About 16,250 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is Lp 1 SB Exit Ramp over Drain?

The structure is 41 ft (12.5 m) long with a longest span of 8 ft (2.4 m).

Who owns Lp 1 SB Exit Ramp over Drain?

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