Structure 142270011313479 · Travis County, TX

SH 71 WB Ml over Detention Pond

Carries SH 71 WB Ml over Detention Pond, 0.05 Mi W Of US 183.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructure8/9 · Very Good
Substructure8/9 · Very Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT688 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 8/9

688 ft end to end, longest span 130 ft: about 1.9 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.

Built20206 years old
Length688.0 ft209.7 m
Daily traffic30,800counted 2013
Last inspectedJuly 2023every 24 months

Location

StateTexas
CountyTravis
Location0.05 Mi W Of US 183
CarriesSH 71 WB Ml
CrossesDetention Pond
Coordinates30.22134, -97.68584

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length688.0 ft (209.7 m)
Max Span129.6 ft (39.5 m)
Deck Width58.4 ft (17.8 m)
Deck Area3732.7 sq m
Main Spans6
Year Built2020

Traffic

Avg Daily Traffic30,800 (2013)
Truck Traffic5%
Lanes On Bridge3

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 Number142270011313479

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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