Structure 142460T00183026 · Williamson County, TX

183a NB On-rp over 183a NB Off-rp

Carries 183a NB On-rp over 183a NB Off-rp, 0.9 Mi N Of FM 1431.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT746 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

746 ft end to end, longest span 125 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.

Built201214 years old
Length746.1 ft227.4 m
Daily traffic35,207counted 2011
Last inspectedSeptember 2023every 48 months

Location

StateTexas
CountyWilliamson
Location0.9 Mi N Of FM 1431
Carries183a NB On-rp
Crosses183a NB Off-rp
Coordinates30.54341, -97.81641

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length746.1 ft (227.4 m)
Max Span125.0 ft (38.1 m)
Deck Width27.9 ft (8.5 m)
Deck Area1932.9 sq m
Main Spans6
Year Built2012

Traffic

Avg Daily Traffic35,207 (2011)
Truck Traffic5%
Lanes On Bridge1
Lanes Under Bridge1

Inspection & Ownership

Last InspectionSeptember 2023
Inspection FrequencyEvery 48 months
OwnerLocal Toll Authority
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number142460T00183026

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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