Structure 222400B00873001 · Webb County, TX

Obsidian RD over Draw

Carries Obsidian RD over Draw, 0.47 Mi E Of US 83.

Overall conditionFair

Set by its lowest-rated component: Culvert at 6 of 9.

How ratings work
Culvertsets the rating6/9 · Satisfactory
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT71 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 6/9

A culvert 71 ft across with 4 openings. 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, so those are drawn as typical for a culvert.

Built200818 years old
Length70.9 ft21.6 m
Daily traffic2,869counted 2024
Last inspectedOctober 2024every 24 months

Location

StateTexas
CountyWebb
Location0.47 Mi E Of US 83
CarriesObsidian RD
CrossesDraw
Coordinates27.43668, -99.47234

Physical Characteristics

MaterialConcrete
DesignCulvert
Total Length70.9 ft (21.6 m)
Max Span7.9 ft (2.4 m)
Deck Width71.9 ft (21.9 m)
Deck Area473.0 sq m
Main Spans4
Year Built2008

Traffic

Avg Daily Traffic2,869 (2024)
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number222400B00873001

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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