Structure 121020050003351 · Harris County, TX

Ih45 SB To Bw8 WB over IH 45 Sbfr & Bw 8 Wbfr

Carries Ih45 SB To Bw8 WB over IH 45 Sbfr & Bw 8 Wbfr, Jct. Ih45 & Bw8 South.

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 FT1,364 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

1,364 ft end to end, longest span 150 ft: about 3.8 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.

Built199729 years old
Length1363.8 ft415.7 m
Daily traffic20,726counted 2023
Last inspectedNovember 2024every 24 months

Location

StateTexas
CountyHarris
LocationJct. Ih45 & Bw8 South
CarriesIh45 SB To Bw8 WB
CrossesIH 45 Sbfr & Bw 8 Wbfr
Coordinates29.60661, -95.20766

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length1363.8 ft (415.7 m)
Max Span149.9 ft (45.7 m)
Deck Width29.2 ft (8.9 m)
Deck Area3699.7 sq m
Main Spans2
Year Built1997

Traffic

Avg Daily Traffic20,726 (2023)
Truck Traffic10%
Lanes On Bridge1
Lanes Under Bridge4

Inspection & Ownership

Last InspectionNovember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number121020050003351

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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