Structure 121020002713241 · Harris County, TX

US 59 Sbml over Hillcroft AVE

Carries US 59 Sbml over Hillcroft AVE, 0.6 Mi SW Of Westpark.

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 FT283 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 6/9 · sets the ratingSubstructure 7/9

283 ft end to end: about 4 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.

Built199234 years old
Length283.1 ft86.3 m
Daily traffic112,270counted 2011
Last inspectedSeptember 2022every 48 months

Location

StateTexas
CountyHarris
Location0.6 Mi SW Of Westpark
CarriesUS 59 Sbml
CrossesHillcroft AVE
Coordinates29.71685, -95.49926

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length283.1 ft (86.3 m)
Max Span115.2 ft (35.1 m)
Deck Width90.9 ft (27.7 m)
Deck Area2390.5 sq m
Main Spans1
Year Built1992

Traffic

Avg Daily Traffic112,270 (2011)
Truck Traffic6%
Lanes On Bridge5
Lanes Under Bridge10

Inspection & Ownership

Last InspectionSeptember 2022
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number121020002713241

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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