Structure 121020038903087 · Harris County, TX

SH 146 over SH 146 Bus

Carries SH 146 over SH 146 Bus, 2.70 Mi E Of Spur 330.

Overall conditionFair

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

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

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT437 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 6/9 · sets the rating

437 ft end to end, longest span 86 ft: about 6 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.

Built198838 years old
Length437.0 ft133.2 m
Daily traffic34,111counted 2021
Last inspectedSeptember 2024every 24 months

Location

StateTexas
CountyHarris
Location2.70 Mi E Of Spur 330
CarriesSH 146
CrossesSH 146 Bus
Coordinates29.75523, -94.94300

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length437.0 ft (133.2 m)
Max Span86.0 ft (26.2 m)
Deck Width113.8 ft (34.7 m)
Deck Area4622.0 sq m
Main Spans6
Year Built1988

Traffic

Avg Daily Traffic34,111 (2021)
Truck Traffic20%
Lanes On Bridge6
Lanes Under Bridge9

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 Number121020038903087

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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