Structure 121020050003447 · Harris County, TX

IH 45 SB over Bay Area BLVD

Carries IH 45 SB over Bay Area BLVD, 5.95 Mi SE Of Bw 8.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT365 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 7/9 · sets the rating

365 ft end to end, longest span 145 ft: about 5 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.

Built201610 years old
Length365.2 ft111.3 m
Daily traffic59,076counted 2017
Last inspectedDecember 2022every 48 months

Location

StateTexas
CountyHarris
Location5.95 Mi SE Of Bw 8
CarriesIH 45 SB
CrossesBay Area BLVD
Coordinates29.54042, -95.14166

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length365.2 ft (111.3 m)
Max Span145.0 ft (44.2 m)
Deck Width129.3 ft (39.4 m)
Deck Area4385.2 sq m
Main Spans3
Year Built2016

Traffic

Avg Daily Traffic59,076 (2017)
Truck Traffic7%
Lanes On Bridge6
Lanes Under Bridge8

Inspection & Ownership

Last InspectionDecember 2022
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure Number121020050003447

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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