US Bridges

I-75 SB (sr 93) over Bruce B. Downs BL(CR581)

Good

Hillsborough County, Florida · 2.7MI Nof Hillsboro River · Structure no. 100837

Built
2012
13 years old
Condition
Good
inspected November 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
264 ft
2 main spans
Daily traffic
58,500
2023 count
Owner
State
State Highway Agency

About this bridge

I-75 SB (sr 93) over Bruce B. Downs BL(CR581) is a prestressed concrete stringer/multi-beam or girder carrying I-75 SB (sr 93) over Bruce B. Downs BL(CR581) in Hillsborough County, Florida. It was built in 2012, so it is 13 years old, younger than the Florida average of 41.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 58,500 vehicles a day, roughly 15% of them trucks, projected to reach 101,498 by 2042. The structure is 264 ft (80.5 m) long and 59 ft wide.

Location

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CarriesI-75 SB (sr 93)
CrossesBruce B. Downs BL(CR581)
Location2.7MI Nof Hillsboro River
RouteInterstate 75
CountyHillsborough County
StateFlorida
Coordinates28.12181, -82.37436
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54 US tons
Inventory rating49.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length264 ft (80.5 m)
Longest span132 ft (40.2 m)
Deck width59 ft (18 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deck99 ft (30.2 m)

Traffic and service

Average daily traffic58,500 (2023)
Projected traffic101,498 by 2042
Trucks15%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-75 SB (sr 93) over Bruce B. Downs BL(CR581) built?

It was built in 2012, making it 13 years old in 2025.

What condition is I-75 SB (sr 93) over Bruce B. Downs BL(CR581) in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in November 2023.

How much traffic does I-75 SB (sr 93) over Bruce B. Downs BL(CR581) carry?

About 58,500 vehicles per day (2023 count), of which roughly 15% are trucks.

How long is I-75 SB (sr 93) over Bruce B. Downs BL(CR581)?

The structure is 264 ft (80.5 m) long with a longest span of 132 ft (40.2 m) and a deck 59 ft wide.

Who owns I-75 SB (sr 93) over Bruce B. Downs BL(CR581)?

It is owned by the State Highway Agency.