US Bridges

CR-586 over St. Joseph Sound

Fair

Pinellas County, Florida · 2.1MI West of Alt US-19 · Structure no. 150067

Built
1963
62 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
386 ft
8 main spans
Daily traffic
14,200
2023 count
Owner
County
County Highway Agency

About this bridge

CR-586 over St. Joseph Sound is a prestressed concrete stringer/multi-beam or girder carrying CR-586 over St. Joseph Sound in Pinellas County, Florida. It was built in 1963, so it is 62 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 14,200 vehicles a day, roughly 5% of them trucks, projected to reach 24,637 by 2042. The structure is 386 ft (117.7 m) long and 40 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesCR-586
CrossesSt. Joseph Sound
Location2.1MI West of Alt US-19
RouteCounty Highway 586
CountyPinellas County
StateFlorida
Coordinates28.05942, -82.81151
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to 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 rating63.3 US tons
Inventory rating38 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans8
Design loadUnknown
Structure length386 ft (117.7 m)
Longest span49 ft (14.9 m)
Deck width40 ft (12.1 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,200 (2023)
Projected traffic24,637 by 2042
Trucks5%
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

OwnerCounty Highway Agency
Maintained byCounty 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 CR-586 over St. Joseph Sound built?

It was built in 1963, making it 62 years old in 2025.

What condition is CR-586 over St. Joseph Sound 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 September 2023.

How much traffic does CR-586 over St. Joseph Sound carry?

About 14,200 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is CR-586 over St. Joseph Sound?

The structure is 386 ft (117.7 m) long with a longest span of 49 ft (14.9 m) and a deck 40 ft wide.

Who owns CR-586 over St. Joseph Sound?

It is owned by the County Highway Agency.