Structure 120800002708021 · Fort Bend County, TX

US 90a over Dulles/kirkwood

Carries US 90a over Dulles/kirkwood, US 90a At Dulles/kirkwood.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT621 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

621 ft end to end, longest span 121 ft: about 1.7 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.

Built200818 years old
Length621.1 ft189.3 m
Daily traffic22,000counted 2010
Last inspectedDecember 2024every 24 months

Location

StateTexas
CountyFort Bend
LocationUS 90a At Dulles/kirkwood
CarriesUS 90a
CrossesDulles/kirkwood
Coordinates29.62742, -95.58269

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length621.1 ft (189.3 m)
Max Span121.1 ft (36.9 m)
Deck Width94.2 ft (28.7 m)
Deck Area5432.9 sq m
Main Spans6
Year Built2008

Traffic

Avg Daily Traffic22,000 (2010)
Truck Traffic10%
Lanes On Bridge6
Lanes Under Bridge10

Inspection & Ownership

Last InspectionDecember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number120800002708021

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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