US Bridges

US-41 NB (SR-45) over Alafia River

Fair

Hillsborough County, Florida · 7.5 Miles S of SR-60 · Structure no. 100107

Built
1952
73 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
1,216 ft
2 main spans
Daily traffic
40,500
2023 count
Owner
State
State Highway Agency

About this bridge

US-41 NB (SR-45) over Alafia River is a steel continuous stringer/multi-beam or girder carrying US-41 NB (SR-45) over Alafia River in Hillsborough County, Florida. It was built in 1952, so it is 73 years old, older than the Florida average of 41.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 40,500 vehicles a day, roughly 5% of them trucks, projected to reach 70,268 by 2042. The structure is 1,216 ft (370.6 m) long and 39 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesUS-41 NB (SR-45)
CrossesAlafia River
Location7.5 Miles S of SR-60
RouteU.S. Route 41
CountyHillsborough County
StateFlorida
Coordinates27.85966, -82.3836
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.1 US tons
Inventory rating37.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2 (+22 approach)
Design loadH 20
Structure length1,216 ft (370.6 m)
Longest span78 ft (23.8 m)
Deck width39 ft (11.9 m)
Roadway width30 ft (9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40,500 (2023)
Projected traffic70,268 by 2042
Trucks5%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway and pedestrian
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 NB (SR-45) over Alafia River built?

It was built in 1952, making it 73 years old in 2025.

What condition is US-41 NB (SR-45) over Alafia River in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in March 2023.

How much traffic does US-41 NB (SR-45) over Alafia River carry?

About 40,500 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is US-41 NB (SR-45) over Alafia River?

The structure is 1,216 ft (370.6 m) long with a longest span of 78 ft (23.8 m) and a deck 39 ft wide.

Who owns US-41 NB (SR-45) over Alafia River?

It is owned by the State Highway Agency.