Structure 121020005006461 · Harris County, TX

SH 99n To US 290w over US 290 Ml - Uprr

Carries SH 99n To US 290w over US 290 Ml - Uprr, .3 Mi W Of Fairfield Pl.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT3,324 FT OVERALL500 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 7/9

3,324 ft end to end, longest span 269 ft: about 9.2 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 bridge of this kind.

Built201313 years old
Length3324.1 ft1013.2 m
Daily traffic38,840counted 2014
Last inspectedSeptember 2024every 24 months

Location

StateTexas
CountyHarris
Location.3 Mi W Of Fairfield Pl
CarriesSH 99n To US 290w
CrossesUS 290 Ml - Uprr
Coordinates29.99535, -95.76865

Physical Characteristics

MaterialSteel Continuous
DesignOther
Total Length3324.1 ft (1013.2 m)
Max Span269.0 ft (82 m)
Deck Width28.2 ft (8.6 m)
Deck Area8713.5 sq m
Main Spans4
Year Built2013

Traffic

Avg Daily Traffic38,840 (2014)
Truck Traffic5%
Lanes On Bridge1
Lanes Under Bridge15

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number121020005006461

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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