US Bridges

SR-16 over San Sebastian River

Good

St. Johns County, Florida · 0.3 Mi. W. of US-1 · Structure no. 780109

Built
2001
24 years old
Condition
Good
inspected November 2023
Type
Slab
Concrete
Length
330 ft
10 main spans
Daily traffic
23,000
2022 count
Owner
State
State Highway Agency

About this bridge

SR-16 over San Sebastian River is a concrete slab carrying SR-16 over San Sebastian River in St. Johns County, Florida. It was built in 2001, so it is 24 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 23,000 vehicles a day, roughly 4% of them trucks, projected to reach 39,905 by 2044. The structure is 330 ft (100.6 m) long and 99 ft wide. If it were closed, the detour would be 22.4 mi (36 km).

Location

Open in Google Maps
CarriesSR-16
CrossesSan Sebastian River
Location0.3 Mi. W. of US-1
RouteState Highway 16
CountySt. Johns County
StateFlorida
Coordinates29.91617, -81.32772
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 inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating93.1 US tons
Inventory rating55.9 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans10
Design loadHS 20 + Mod
Structure length330 ft (100.6 m)
Longest span34 ft (10.3 m)
Deck width99 ft (30.3 m)
Roadway width82 ft (24.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic23,000 (2022)
Projected traffic39,905 by 2044
Trucks4%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed22.4 mi (36 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR-16 over San Sebastian River built?

It was built in 2001, making it 24 years old in 2025.

What condition is SR-16 over San Sebastian 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 November 2023.

How much traffic does SR-16 over San Sebastian River carry?

About 23,000 vehicles per day (2022 count), of which roughly 4% are trucks.

How long is SR-16 over San Sebastian River?

The structure is 330 ft (100.6 m) long with a longest span of 34 ft (10.3 m) and a deck 99 ft wide.

Who owns SR-16 over San Sebastian River?

It is owned by the State Highway Agency.