Structure 121020325604320 · Harris County, TX

Bw 8 over US 90a & Up Railroad

Carries Bw 8 over US 90a & Up Railroad, 3.4 Mi SE Of US 59.

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
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,770 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

1,770 ft end to end, longest span 120 ft: about 4.9 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.

Built2001rebuilt 2013
Length1770.0 ft539.5 m
Daily traffic12,290counted 2012
Last inspectedOctober 2022every 48 months

Location

StateTexas
CountyHarris
Location3.4 Mi SE Of US 59
CarriesBw 8
CrossesUS 90a & Up Railroad
Coordinates29.62641, -95.51791

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length1770.0 ft (539.5 m)
Max Span120.1 ft (36.6 m)
Deck Width142.7 ft (43.5 m)
Deck Area23468.2 sq m
Main Spans15
Year Built2001 (reconstructed 2013)

Traffic

Avg Daily Traffic12,290 (2012)
Truck Traffic6%
Lanes On Bridge8
Lanes Under Bridge12

Inspection & Ownership

Last InspectionOctober 2022
Inspection FrequencyEvery 48 months
OwnerLocal Toll Authority
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number121020325604320

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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