US Bridges

SR-686 over Cross Bayou Canal

Fair

Pinellas County, Florida · 300FT NW of 49th ST JCT · Structure no. 150065

Built
1955
70 years old
Condition
Fair
inspected March 2024
Type
Culvert
Concrete
Length
44 ft
4 main spans
Daily traffic
26,323
2024 count
Owner
State
State Highway Agency

About this bridge

SR-686 over Cross Bayou Canal is a concrete culvert carrying SR-686 over Cross Bayou Canal in Pinellas County, Florida. It was built in 1955, so it is 70 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 5 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 26,323 vehicles a day, roughly 4% of them trucks, projected to reach 45,670 by 2044. The structure is 44 ft (13.3 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesSR-686
CrossesCross Bayou Canal
Location300FT NW of 49th ST JCT
RouteState Highway 686
CountyPinellas County
StateFlorida
Coordinates27.91084, -82.70186
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
Channel and channel protection7 GoodSome minor problems.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74.5 US tons
Inventory rating44.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans4
Design loadHS 20 + Mod
Structure length44 ft (13.3 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic26,323 (2024)
Projected traffic45,670 by 2044
Trucks4%
Lanes on structure8
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 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-686 over Cross Bayou Canal built?

It was built in 1955, making it 70 years old in 2025.

What condition is SR-686 over Cross Bayou Canal 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 March 2024.

How much traffic does SR-686 over Cross Bayou Canal carry?

About 26,323 vehicles per day (2024 count), of which roughly 4% are trucks.

How long is SR-686 over Cross Bayou Canal?

The structure is 44 ft (13.3 m) long with a longest span of 10 ft (3 m).

Who owns SR-686 over Cross Bayou Canal?

It is owned by the State Highway Agency.