US Bridges

SR-674 over Little Manatee Relief

Good

Hillsborough County, Florida · 2.3 MI West of CR-39 · Structure no. 100579

Built
1992
33 years old
Condition
Good
inspected January 2024
Type
Slab
Concrete Continuous
Length
143 ft
6 main spans
Daily traffic
5,800
2024 count
Owner
State
State Highway Agency

About this bridge

SR-674 over Little Manatee Relief is a concrete continuous slab carrying SR-674 over Little Manatee Relief in Hillsborough County, Florida. It was built in 1992, so it is 33 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 5,800 vehicles a day, roughly 14% of them trucks, projected to reach 16,111 by 2042. The structure is 143 ft (43.7 m) long and 48 ft wide. If it were closed, the detour would be 12.4 mi (20 km).

CarriesSR-674
CrossesLittle Manatee Relief
Location2.3 MI West of CR-39
RouteState Highway 674
StateFlorida
Coordinates27.70464, -82.18466
Functional classRural Minor 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 inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51.3 US tons
Inventory rating30.8 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20 + Mod
Structure length143 ft (43.7 m)
Longest span24 ft (7.3 m)
Deck width48 ft (14.5 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,800 (2024)
Projected traffic16,111 by 2042
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRelief for waterway
Detour if closed12.4 mi (20 km)
TollOn a free road
National Highway SystemNo

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—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR-674 over Little Manatee Relief built?

It was built in 1992, making it 33 years old in 2025.

What condition is SR-674 over Little Manatee Relief 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 January 2024.

How much traffic does SR-674 over Little Manatee Relief carry?

About 5,800 vehicles per day (2024 count), of which roughly 14% are trucks.

How long is SR-674 over Little Manatee Relief?

The structure is 143 ft (43.7 m) long with a longest span of 24 ft (7.3 m) and a deck 48 ft wide.

Who owns SR-674 over Little Manatee Relief?

It is owned by the State Highway Agency.