Structure 142270001513471 · Travis County, TX

US 183 NB over IH 35

Carries US 183 NB over IH 35, Between Lamar And IH 35.

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 FT4,108 FT OVERALL500 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

4,108 ft end to end, longest span 134 ft: about 11 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 segmental box-girder bridge.

Built199828 years old
Length4107.9 ft1252.1 m
Daily traffic12,058counted 2023
Last inspectedAugust 2023every 24 months

Location

StateTexas
CountyTravis
LocationBetween Lamar And IH 35
CarriesUS 183 NB
CrossesIH 35
Coordinates30.33774, -97.69707

Physical Characteristics

MaterialPrestressed Concrete
DesignSegmental Box Girder
Total Length4107.9 ft (1252.1 m)
Max Span133.9 ft (40.8 m)
Deck Width58.1 ft (17.7 m)
Deck Area22162.2 sq m
Main Spans34
Year Built1998

Traffic

Avg Daily Traffic12,058 (2023)
Truck Traffic2%
Lanes On Bridge2
Lanes Under Bridge29

Inspection & Ownership

Last InspectionAugust 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number142270001513471

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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