Structure 142460068301063 · Williamson County, TX

SH 45 WB over North Branch

Carries SH 45 WB over North Branch, 0.70 Mi E Of US 183.

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
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT2,016 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

2,016 ft end to end, longest span 112 ft: about 5.6 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.

Built200620 years old
Length2016.1 ft614.5 m
Daily traffic21,000counted 2016
Last inspectedNovember 2023every 24 months

Location

StateTexas
CountyWilliamson
Location0.70 Mi E Of US 183
CarriesSH 45 WB
CrossesNorth Branch
Coordinates30.47249, -97.78487

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length2016.1 ft (614.5 m)
Max Span111.9 ft (34.1 m)
Deck Width82.0 ft (25 m)
Deck Area15362.5 sq m
Main Spans18
Year Built2006

Traffic

Avg Daily Traffic21,000 (2016)
Truck Traffic15%
Lanes On Bridge4

Inspection & Ownership

Last InspectionNovember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number142460068301063

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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