Structure 142270026501100 · Travis County, TX

US 183 SB Ml over Colorado River

Carries US 183 SB Ml over Colorado River, 8.3 Mi. S. Of Jct. IH 35.

Overall conditionGood

Set by its lowest-rated component: Deck and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,854 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 7/9 · sets the rating

1,854 ft end to end, longest span 122 ft: about 5.2 football fields. 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.

Built199432 years old
Length1854.0 ft565.1 m
Daily traffic44,056counted 2018
Last inspectedJuly 2023every 24 months

Location

StateTexas
CountyTravis
Location8.3 Mi. S. Of Jct. IH 35
CarriesUS 183 SB Ml
CrossesColorado River
Coordinates30.24559, -97.69117

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length1854.0 ft (565.1 m)
Max Span122.0 ft (37.2 m)
Deck Width70.9 ft (21.6 m)
Deck Area12206.2 sq m
Main Spans17
Year Built1994

Traffic

Avg Daily Traffic44,056 (2018)
Truck Traffic2%
Lanes On Bridge3
Lanes Under Bridge7

Inspection & Ownership

Last InspectionJuly 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number142270026501100

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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