Structure 100832 · Hillsborough County, FL

I-275 SB (sr-93) over Business Us-41(sr-685)

Carries I-275 SB (sr-93) over Business Us-41(sr-685), 0.2 Mi E Of Hills 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 FT1,096 FT OVERALL200 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 7/9

1,096 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 2005
Length1096.1 ft334.1 m
Daily traffic—reported figure implausible
Last inspectedJuly 2024every 24 months

Location

StateFlorida
CountyHillsborough
Location0.2 Mi E Of Hills River
CarriesI-275 SB (sr-93)
CrossesBusiness Us-41(sr-685)
Coordinates27.95668, -82.46094

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length1096.1 ft (334.1 m)
Max Span84.6 ft (25.8 m)
Deck Width64.6 ft (19.7 m)
Deck Area6581.8 sq m
Main Spans15
Year Built1964 (reconstructed 2005)

Traffic

Avg Daily Traffic222,000 (2024)
That is about 55,500 vehicles per lane per day — beyond what any U.S. road carries (the busiest freeways run about 25,000–30,000). It is almost certainly a data-entry error in the National Bridge Inventory, so we leave this bridge out of traffic rankings.
Truck Traffic9%
Lanes On Bridge4
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 Number100832

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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