US Bridges

SR-37 NB over North Fork Alafia River

Good

Polk County, Florida · 0.4 MI South of SR-60 · Structure no. 160228

Built
2014
11 years old
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
256 ft
4 main spans
Daily traffic
7,000
2023 count
Owner
State
State Highway Agency

About this bridge

SR-37 NB over North Fork Alafia River is a prestressed concrete stringer/multi-beam or girder carrying SR-37 NB over North Fork Alafia River in Polk County, Florida. It was built in 2014, so it is 11 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 7,000 vehicles a day, roughly 22% of them trucks, projected to reach 14,000 by 2042. The structure is 256 ft (78 m) long and 41 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesSR-37 NB
CrossesNorth Fork Alafia River
Location0.4 MI South of SR-60
RouteState Highway 37
StateFlorida
Coordinates27.88914, -81.97348
Functional classUrban 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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54 US tons
Inventory rating41.8 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHL 93
Structure length256 ft (78 m)
Longest span64 ft (19.5 m)
Deck width41 ft (12.5 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,000 (2023)
Projected traffic14,000 by 2042
Trucks22%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 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-37 NB over North Fork Alafia River built?

It was built in 2014, making it 11 years old in 2025.

What condition is SR-37 NB over North Fork Alafia 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 October 2023.

How much traffic does SR-37 NB over North Fork Alafia River carry?

About 7,000 vehicles per day (2023 count), of which roughly 22% are trucks.

How long is SR-37 NB over North Fork Alafia River?

The structure is 256 ft (78 m) long with a longest span of 64 ft (19.5 m) and a deck 41 ft wide.

Who owns SR-37 NB over North Fork Alafia River?

It is owned by the State Highway Agency.