Structure 150830AA0135002 · Frio County, TX

CR 4425 / Derby RD over Frio River West Draw

Carries CR 4425 / Derby RD over Frio River West Draw, 2.2 Mi W Of IH 35.

Overall conditionFair

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

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

Elevation

Side view, colored by inspection rating
CAR · 15 FT50 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 6/9 · sets the rating

50 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 bridge of this kind.

Built200818 years old
Length49.9 ft15.2 m
Daily traffic150counted 2013
Last inspectedJuly 2023every 24 months

Location

StateTexas
CountyFrio
Location2.2 Mi W Of IH 35
CarriesCR 4425 / Derby RD
CrossesFrio River West Draw
Coordinates28.78227, -99.16659

Physical Characteristics

MaterialPrestressed Concrete
DesignOther
Total Length49.9 ft (15.2 m)
Max Span49.9 ft (15.2 m)
Deck Width25.9 ft (7.9 m)
Deck Area120.1 sq m
Main Spans1
Year Built2008

Traffic

Avg Daily Traffic150 (2013)
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number150830AA0135002

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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