Structure 142270015106102 · Travis County, TX

Ih35nb To Us183nb over US 183 And Ih35 Mainlane

Carries Ih35nb To Us183nb over US 183 And Ih35 Mainlane, Ih35/us183 Interchange.

Overall conditionFair

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

How ratings work
Deck8/9 · Very Good
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,943 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 7/9Substructure 6/9 · sets the rating

1,943 ft end to end, longest span 178 ft: about 5.4 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.

Built1998rebuilt 2021
Length1942.9 ft592.2 m
Daily traffic—reported figure implausible
Last inspectedAugust 2023every 24 months

Location

StateTexas
CountyTravis
LocationIh35/us183 Interchange
CarriesIh35nb To Us183nb
CrossesUS 183 And Ih35 Mainlane
Coordinates30.33863, -97.70028

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignSegmental Box Girder
Total Length1942.9 ft (592.2 m)
Max Span178.1 ft (54.3 m)
Deck Width27.9 ft (8.5 m)
Deck Area5033.7 sq m
Main Spans11
Year Built1998 (reconstructed 2021)

Traffic

Avg Daily Traffic148,000 (2011)
That is about 148,000 vehicles per lane per day — beyond what any U.S. road carries (the busiest freeways run about 25,000–30,000). It is almost certainly a data-entry error in the National Bridge Inventory, so we leave this bridge out of traffic rankings.
Truck Traffic2%
Lanes On Bridge1
Lanes Under Bridge21

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 Number142270015106102

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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