Structure 121020005009151 · Harris County, TX

US 290 WB Ml over Senate DR

Carries US 290 WB Ml over Senate DR, 0.6 Mi NW Of Bwy 8.

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 FT335 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

335 ft end to end, longest span 115 ft: about 5 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 2016
Length335.0 ft102.1 m
Daily traffic97,535counted 2016
Last inspectedOctober 2022every 48 months

Location

StateTexas
CountyHarris
Location0.6 Mi NW Of Bwy 8
CarriesUS 290 WB Ml
CrossesSenate DR
Coordinates29.87689, -95.56286

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length335.0 ft (102.1 m)
Max Span115.2 ft (35.1 m)
Deck Width124.3 ft (37.9 m)
Deck Area3869.6 sq m
Main Spans3
Year Built1990 (reconstructed 2016)

Traffic

Avg Daily Traffic97,535 (2016)
Truck Traffic8%
Lanes On Bridge6
Lanes Under Bridge8

Inspection & Ownership

Last InspectionOctober 2022
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number121020005009151

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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