Structure 121020011006092 · Harris County, TX

IH 45 Ml over Bw 8 Ebfr & Wbfr

Carries IH 45 Ml over Bw 8 Ebfr & Wbfr, IH 45 Ml.

Overall conditionFair

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

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

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT540 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

540 ft end to end, longest span 60 ft: about 1.5 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.

Built1971rebuilt 1995
Length540.0 ft164.6 m
Daily traffic235,527counted 2023
Last inspectedSeptember 2024every 24 months

Location

StateTexas
CountyHarris
LocationIH 45 Ml
CarriesIH 45 Ml
CrossesBw 8 Ebfr & Wbfr
Coordinates29.94025, -95.41383

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length540.0 ft (164.6 m)
Max Span60.0 ft (18.3 m)
Deck Width175.9 ft (53.6 m)
Deck Area8822.6 sq m
Main Spans9
Year Built1971 (reconstructed 1995)

Traffic

Avg Daily Traffic235,527 (2023)
Truck Traffic6%
Lanes On Bridge9
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 Number121020011006092

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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