Structure 142270015106082 · Travis County, TX

US 183 SB over Lp 1

Carries US 183 SB over Lp 1, US 183 / Lp 1 Interchange.

Overall conditionFair

Set by its lowest-rated component: Substructure at 6 of 9.

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT383 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

383 ft end to end, longest span 130 ft: about 5 semi-trucks nose to tail. Lengths and the semi-truck on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a multi-beam bridge.

Built199135 years old
Length382.9 ft116.7 m
Daily traffic68,783counted 2019
Last inspectedAugust 2023every 48 months

Location

StateTexas
CountyTravis
LocationUS 183 / Lp 1 Interchange
CarriesUS 183 SB
CrossesLp 1
Coordinates30.37948, -97.73816

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length382.9 ft (116.7 m)
Max Span129.9 ft (39.6 m)
Deck Width69.9 ft (21.3 m)
Deck Area2485.7 sq m
Main Spans3
Year Built1991

Traffic

Avg Daily Traffic68,783 (2019)
Truck Traffic2%
Lanes On Bridge4
Lanes Under Bridge10

Inspection & Ownership

Last InspectionAugust 2023
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number142270015106082

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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