Structure 100110 · Hillsborough County, FL

I-275 NB (sr-93) over Bus 41 (sr-685)

Carries I-275 NB (sr-93) over Bus 41 (sr-685), 0.2 Mi E Hillsboro River.

Overall conditionFair

Set by its lowest-rated component: Deck at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,093 FT OVERALL200 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 7/9

1,093 ft end to end, longest span 85 ft: about 3.0 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 multi-beam bridge.

Built1964rebuilt 2006
Length1093.2 ft333.2 m
Daily traffic114,000counted 2022
Last inspectedJuly 2024every 24 months

Location

StateFlorida
CountyHillsborough
Location0.2 Mi E Hillsboro River
CarriesI-275 NB (sr-93)
CrossesBus 41 (sr-685)
Coordinates27.95648, -82.46093

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length1093.2 ft (333.2 m)
Max Span84.6 ft (25.8 m)
Deck Width82.3 ft (25.1 m)
Deck Area8363.3 sq m
Main Spans15
Year Built1964 (reconstructed 2006)

Traffic

Avg Daily Traffic114,000 (2022)
Truck Traffic7%
Lanes On Bridge5
Lanes Under Bridge12

Inspection & Ownership

Last InspectionJuly 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number100110

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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