Structure 150158 · Pinellas County, FL

I-375 EB over Alt-19 15th & 16th ST

Carries I-375 EB over Alt-19 15th & 16th ST, 0.19mi. East Of I-275.

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 FT1,106 FT OVERALL200 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

1,106 ft end to end, longest span 105 ft: about 3.1 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.

Built197749 years old
Length1105.6 ft337 m
Daily traffic17,000counted 2024
Last inspectedNovember 2024every 24 months

Location

StateFlorida
CountyPinellas
Location0.19mi. East Of I-275
CarriesI-375 EB
CrossesAlt-19 15th & 16th ST
Coordinates27.77705, -82.65486

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length1105.6 ft (337 m)
Max Span105.0 ft (32 m)
Deck Width55.4 ft (16.9 m)
Deck Area5695.3 sq m
Main Spans13
Year Built1977

Traffic

Avg Daily Traffic17,000 (2024)
Truck Traffic3%
Lanes On Bridge3
Lanes Under Bridge9

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 Number150158

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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