Structure 142270026501051 · Travis County, TX

SH 71 WB over Onion Creek

Carries SH 71 WB over Onion Creek, 1.40 Mi SE Of FM 973 S.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT752 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 7/9

752 ft end to end, longest span 75 ft: about 2.1 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.

Built1958rebuilt 1990
Length752.0 ft229.2 m
Daily traffic32,393counted 2023
Last inspectedJuly 2023every 24 months

Location

StateTexas
CountyTravis
Location1.40 Mi SE Of FM 973 S
CarriesSH 71 WB
CrossesOnion Creek
Coordinates30.18977, -97.61892

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length752.0 ft (229.2 m)
Max Span75.1 ft (22.9 m)
Deck Width52.2 ft (15.9 m)
Deck Area3644.3 sq m
Main Spans3
Year Built1958 (reconstructed 1990)

Traffic

Avg Daily Traffic32,393 (2023)
Truck Traffic5%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour Critical7 — Countermeasures installed
Structure Number142270026501051

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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