Structure 142270001513331 · Travis County, TX

IH 35 SB Overhead over IH 35 SB Lower Level

Carries IH 35 SB Overhead over IH 35 SB Lower Level, 3.5 Mi S Of US 183.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
7,925 FT OVERALL1,000 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

7,925 ft end to end, longest span 135 ft: about 22 football fields, or 1.5 miles. Lengths are drawn to scale; at this length a semi-truck would be a speck. 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.

Built1972rebuilt 1976
Length7924.9 ft2415.5 m
Daily traffic99,058counted 2018
Last inspectedAugust 2023every 48 months

Location

StateTexas
CountyTravis
Location3.5 Mi S Of US 183
CarriesIH 35 SB Overhead
CrossesIH 35 SB Lower Level
Coordinates30.29176, -97.72169

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length7924.9 ft (2415.5 m)
Max Span134.8 ft (41.1 m)
Deck Width41.7 ft (12.7 m)
Deck Area30676.8 sq m
Main Spans52
Year Built1972 (reconstructed 1976)

Traffic

Avg Daily Traffic99,058 (2018)
Truck Traffic12%
Lanes On Bridge2
Lanes Under Bridge23

Inspection & Ownership

Last InspectionAugust 2023
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour CriticalNot applicable
Structure Number142270001513331

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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