Structure 121020002713209 · Harris County, TX

US 59 Sbml over Westpark DR

Carries US 59 Sbml over Westpark DR, 1.90 Mi W Of IH 610 W.

Overall conditionFair

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

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

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,000 FT OVERALL200 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 6/9 · sets the ratingSubstructure 7/9

1,000 ft end to end, longest span 164 ft: about 2.8 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.

Built1993rebuilt 2003
Length1000.0 ft304.8 m
Daily traffic146,960counted 2011
Last inspectedSeptember 2024every 24 months

Location

StateTexas
CountyHarris
Location1.90 Mi W Of IH 610 W
CarriesUS 59 Sbml
CrossesWestpark DR
Coordinates29.72331, -95.49196

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length1000.0 ft (304.8 m)
Max Span164.0 ft (50 m)
Deck Width90.9 ft (27.7 m)
Deck Area8443.0 sq m
Main Spans3
Year Built1993 (reconstructed 2003)

Traffic

Avg Daily Traffic146,960 (2011)
Truck Traffic6%
Lanes On Bridge6
Lanes Under Bridge10

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 Number121020002713209

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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