US Bridges

US 17 (SR15) SB over Dunns Creek

Good

Putnam County, Florida · US 17 SB over Dunns Crk · Structure no. 760065

Built
2020
5 years old
Condition
Good
inspected July 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
2,808 ft
18 main spans
Daily traffic
6,000
2023 count
Owner
State
State Highway Agency

About this bridge

US 17 (SR15) SB over Dunns Creek is a prestressed concrete stringer/multi-beam or girder carrying US 17 (SR15) SB over Dunns Creek in Putnam County, Florida. It was built in 2020, so it is 5 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 6,000 vehicles a day, roughly 7% of them trucks, projected to reach 10,410 by 2045. The structure is 2,808 ft (855.9 m) long and 54 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesUS 17 (SR15) SB
CrossesDunns Creek
LocationUS 17 SB over Dunns Crk
RouteU.S. Route 17
StateFlorida
Coordinates29.57704, -81.62729
Functional classRural Principal Arterial - Other

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.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72.8 US tons
Inventory rating44.6 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans18
Design loadHL 93
Structure length2,808 ft (855.9 m)
Longest span156 ft (47.5 m)
Deck width54 ft (16.5 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,000 (2023)
Projected traffic10,410 by 2045
Trucks7%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and waterway
Detour if closed1.2 mi (2 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 17 (SR15) SB over Dunns Creek built?

It was built in 2020, making it 5 years old in 2025.

What condition is US 17 (SR15) SB over Dunns Creek 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 July 2024.

How much traffic does US 17 (SR15) SB over Dunns Creek carry?

About 6,000 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is US 17 (SR15) SB over Dunns Creek?

The structure is 2,808 ft (855.9 m) long with a longest span of 156 ft (47.5 m) and a deck 54 ft wide.

Who owns US 17 (SR15) SB over Dunns Creek?

It is owned by the State Highway Agency.