US Bridges

US-41 (SR-45) over Little Manatee River

Good

Hillsborough County, Florida · 1.3MI S of SR-674 · Structure no. 100104

Built
1964
61 years old
Condition
Good
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
740 ft
15 main spans
Daily traffic
20,500
2023 count
Owner
State
State Highway Agency

About this bridge

US-41 (SR-45) over Little Manatee River is a prestressed concrete stringer/multi-beam or girder carrying US-41 (SR-45) over Little Manatee River in Hillsborough County, Florida. It was built in 1964, so it is 61 years old, older 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 20,500 vehicles a day, roughly 11% of them trucks, projected to reach 35,568 by 2042. The structure is 740 ft (225.5 m) long and 33 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesUS-41 (SR-45)
CrossesLittle Manatee River
Location1.3MI S of SR-674
RouteU.S. Route 41
CountyHillsborough County
StateFlorida
Coordinates27.70414, -82.44828
Functional classUrban Other Principal Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating46.1 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans15
Design loadHL 93
Structure length740 ft (225.5 m)
Longest span72 ft (21.9 m)
Deck width33 ft (10.2 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,500 (2023)
Projected traffic35,568 by 2042
Trucks11%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes

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—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was US-41 (SR-45) over Little Manatee River built?

It was built in 1964, making it 61 years old in 2025.

What condition is US-41 (SR-45) over Little Manatee River 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 March 2023.

How much traffic does US-41 (SR-45) over Little Manatee River carry?

About 20,500 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is US-41 (SR-45) over Little Manatee River?

The structure is 740 ft (225.5 m) long with a longest span of 72 ft (21.9 m) and a deck 33 ft wide.

Who owns US-41 (SR-45) over Little Manatee River?

It is owned by the State Highway Agency.