US Bridges

SR-693 NB over Boca Ciega Bay

Fair

Pinellas County, Florida · 0.8 Mi. N of SR-699 · Structure no. 150137

Built
1975
50 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
608 ft
11 main spans
Daily traffic
13,500
2023 count
Owner
State
State Highway Agency

About this bridge

SR-693 NB over Boca Ciega Bay is a prestressed concrete stringer/multi-beam or girder carrying SR-693 NB over Boca Ciega Bay in Pinellas County, Florida. It was built in 1975, so it is 50 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 13,500 vehicles a day, roughly 4% of them trucks, projected to reach 23,422 by 2042. The structure is 608 ft (185.2 m) long and 40 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesSR-693 NB
CrossesBoca Ciega Bay
Location0.8 Mi. N of SR-699
RouteState Highway 693
CountyPinellas County
StateFlorida
Coordinates27.75104, -82.74075
Functional classUrban Minor Arterial

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55 US tons
Inventory rating48 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans11
Design loadHS 20 + Mod
Structure length608 ft (185.2 m)
Longest span56 ft (17 m)
Deck width40 ft (12.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,500 (2023)
Projected traffic23,422 by 2042
Trucks4%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed0.6 mi (1 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-693 NB over Boca Ciega Bay built?

It was built in 1975, making it 50 years old in 2025.

What condition is SR-693 NB 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 November 2023.

How much traffic does SR-693 NB over Boca Ciega Bay carry?

About 13,500 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is SR-693 NB over Boca Ciega Bay?

The structure is 608 ft (185.2 m) long with a longest span of 56 ft (17 m) and a deck 40 ft wide.

Who owns SR-693 NB over Boca Ciega Bay?

It is owned by the State Highway Agency.