Structure 121020325601169 · Harris County, TX

Bw 8 NB over Clay RD

Carries Bw 8 NB over Clay RD, 3.10 Mi S Of US 290.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT264 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 7/9

264 ft end to end: about 4 semi-trucks nose to tail. 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.

Built1990rebuilt 2004
Length264.1 ft80.5 m
Daily traffic15,000counted 2010
Last inspectedNovember 2022every 48 months

Location

StateTexas
CountyHarris
Location3.10 Mi S Of US 290
CarriesBw 8 NB
CrossesClay RD
Coordinates29.83197, -95.56368

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length264.1 ft (80.5 m)
Max Span116.1 ft (35.4 m)
Deck Width71.5 ft (21.8 m)
Deck Area1754.9 sq m
Main Spans1
Year Built1990 (reconstructed 2004)

Traffic

Avg Daily Traffic15,000 (2010)
Truck Traffic7%
Lanes On Bridge4
Lanes Under Bridge8

Inspection & Ownership

Last InspectionNovember 2022
Inspection FrequencyEvery 48 months
OwnerLocal Toll Authority
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number121020325601169

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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