Structure 121020325602492 · Harris County, TX

Bw8 WB To US 59 NB over US 59 NB Fr & Bw 8 WB Fr

Carries Bw8 WB To US 59 NB over US 59 NB Fr & Bw 8 WB Fr, Bw8/us59 N Interchange.

Overall conditionGood

Set by its lowest-rated component: Deck and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT958 FT OVERALL200 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 7/9 · sets the rating

958 ft end to end, longest span 100 ft: about 2.7 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.

Built201214 years old
Length958.0 ft292 m
Daily traffic6,300counted 2021
Last inspectedOctober 2024every 24 months

Location

StateTexas
CountyHarris
LocationBw8/us59 N Interchange
CarriesBw8 WB To US 59 NB
CrossesUS 59 NB Fr & Bw 8 WB Fr
Coordinates29.94131, -95.29379

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length958.0 ft (292 m)
Max Span100.1 ft (30.5 m)
Deck Width28.9 ft (8.8 m)
Deck Area2569.6 sq m
Main Spans10
Year Built2012

Traffic

Avg Daily Traffic6,300 (2021)
Truck Traffic3%
Lanes On Bridge1
Lanes Under Bridge4

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number121020325602492

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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