Structure 120850050001286 · Galveston County, TX

IH 45 over Tidal Interchange

Carries IH 45 over Tidal Interchange, 0.80 Mi SE Of SH 6.

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
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT85 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

85 ft end to end. Lengths and the car 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.

Built198739 years old
Length85.0 ft25.9 m
Daily traffic71,141counted 2022
Last inspectedAugust 2024every 24 months

Location

StateTexas
CountyGalveston
Location0.80 Mi SE Of SH 6
CarriesIH 45
CrossesTidal Interchange
Coordinates29.32248, -94.92314

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length85.0 ft (25.9 m)
Max Span85.0 ft (25.9 m)
Deck Width129.3 ft (39.4 m)
Deck Area1020.5 sq m
Main Spans1
Year Built1987

Traffic

Avg Daily Traffic71,141 (2022)
Truck Traffic5%
Lanes On Bridge7

Inspection & Ownership

Last InspectionAugust 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical4 — Foundations need monitoring
Structure Number120850050001286

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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