US Bridges

79th ST South over Boca Ciega Bay

Fair

Pinellas County, Florida · 0.5MI S of Central Ave. · Structure no. 157210

Built
2003
22 years old
Condition
Fair
inspected July 2023
Type
Slab
Concrete Continuous
Length
89 ft
3 main spans
Daily traffic
3,541
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

79th ST South over Boca Ciega Bay is a concrete continuous slab carrying 79th ST South over Boca Ciega Bay in Pinellas County, Florida. It was built in 2003, so it is 22 years old, younger 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 3,541 vehicles a day, roughly 2% of them trucks, projected to reach 6,144 by 2042. The structure is 89 ft (27.2 m) long and 45 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
Carries79th ST South
CrossesBoca Ciega Bay
Location0.5MI S of Central Ave.
RouteCity Street 0
CountyPinellas County
StateFlorida
Coordinates27.76244, -82.74728
Functional classUrban Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating110.1 US tons
Inventory rating76.3 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length89 ft (27.2 m)
Longest span30 ft (9.1 m)
Deck width45 ft (13.8 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,541 (2023)
Projected traffic6,144 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed123.7 mi (199 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 79th ST South over Boca Ciega Bay built?

It was built in 2003, making it 22 years old in 2025.

What condition is 79th ST South over Boca Ciega 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 July 2023.

How much traffic does 79th ST South over Boca Ciega Bay carry?

About 3,541 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is 79th ST South over Boca Ciega Bay?

The structure is 89 ft (27.2 m) long with a longest span of 30 ft (9.1 m) and a deck 45 ft wide.

Who owns 79th ST South over Boca Ciega Bay?

It is owned by the City or Municipal Highway Agency.