Structure 121020005009118 · Harris County, TX

US 290 EB Ml over Bw 8 Frontage Road

Carries US 290 EB Ml over Bw 8 Frontage Road, US 290 At Beltway 8.

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 FT770 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 7/9

770 ft end to end, longest span 130 ft: about 2.1 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.

Built199036 years old
Length770.0 ft234.7 m
Daily traffic88,163counted 2016
Last inspectedOctober 2022every 48 months

Location

StateTexas
CountyHarris
LocationUS 290 At Beltway 8
CarriesUS 290 EB Ml
CrossesBw 8 Frontage Road
Coordinates29.87344, -95.55575

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length770.0 ft (234.7 m)
Max Span129.9 ft (39.6 m)
Deck Width70.9 ft (21.6 m)
Deck Area5069.5 sq m
Main Spans6
Year Built1990

Traffic

Avg Daily Traffic88,163 (2016)
Truck Traffic8%
Lanes On Bridge4
Lanes Under Bridge6

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 Number121020005009118

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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