Structure 172390244701004 · Washington County, TX

FM 577 over Ralston Creek

Carries FM 577 over Ralston Creek, 1.0 Mi NW Of US 290.

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
CAR · 15 FT85 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

85 ft end to end. Lengths and the car 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.

Built201313 years old
Length85.0 ft25.9 m
Daily traffic6,028counted 2020
Last inspectedApril 2023every 24 months

Location

StateTexas
CountyWashington
Location1.0 Mi NW Of US 290
CarriesFM 577
CrossesRalston Creek
Coordinates30.15510, -96.36968

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length85.0 ft (25.9 m)
Max Span85.0 ft (25.9 m)
Deck Width62.0 ft (18.9 m)
Deck Area489.5 sq m
Main Spans1
Year Built2013

Traffic

Avg Daily Traffic6,028 (2020)
Truck Traffic5%
Lanes On Bridge3

Inspection & Ownership

Last InspectionApril 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number172390244701004

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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