US Bridges

16th Street over ST Joe Bay

Fair

Gulf County, Florida · 0.5 MI North of US98/SR30 · Structure no. 510005

Built
1961
64 years old
Condition
Fair
inspected August 2024
Type
Slab
Concrete
Length
47 ft
3 main spans
Daily traffic
100
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

16th Street over ST Joe Bay is a concrete slab carrying 16th Street over ST Joe Bay in Gulf County, Florida. It was built in 1961, so it is 64 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 100 vehicles a day, projected to reach 110 by 2043. The structure is 47 ft (14.4 m) long and 33 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
Carries16th Street
CrossesST Joe Bay
Location0.5 MI North of US98/SR30
RouteCity Street 0
CountyGulf County
StateFlorida
Coordinates29.80333, -85.29294
Functional classUrban Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46 US tons
Inventory rating27 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length47 ft (14.4 m)
Longest span16 ft (5 m)
Deck width33 ft (10.2 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2023)
Projected traffic110 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 16th Street over ST Joe Bay built?

It was built in 1961, making it 64 years old in 2025.

What condition is 16th Street over ST Joe Bay 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 August 2024.

How much traffic does 16th Street over ST Joe Bay carry?

About 100 vehicles per day (2023 count).

How long is 16th Street over ST Joe Bay?

The structure is 47 ft (14.4 m) long with a longest span of 16 ft (5 m) and a deck 33 ft wide.

Who owns 16th Street over ST Joe Bay?

It is owned by the City or Municipal Highway Agency.