Structure 121020050003315 · Harris County, TX

IH 45 Hov Ml over IH 45 Median

Carries IH 45 Hov Ml over IH 45 Median, 0.35 Mi NW Of FM 1959.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,450 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

1,450 ft end to end, longest span 140 ft: about 4.0 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 box-beam bridge.

Built1998rebuilt 2017
Length1450.1 ft442 m
Daily traffic16,414counted 2023
Last inspectedDecember 2024every 24 months

Location

StateTexas
CountyHarris
Location0.35 Mi NW Of FM 1959
CarriesIH 45 Hov Ml
CrossesIH 45 Median
Coordinates29.59484, -95.19351

Physical Characteristics

MaterialSteel Continuous
DesignBox Beam - Single/Spread
Total Length1450.1 ft (442 m)
Max Span140.1 ft (42.7 m)
Deck Width23.3 ft (7.1 m)
Deck Area3138.2 sq m
Main Spans3
Year Built1998 (reconstructed 2017)

Traffic

Avg Daily Traffic16,414 (2023)
Truck Traffic4%
Lanes On Bridge1

Inspection & Ownership

Last InspectionDecember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number121020050003315

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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