US Bridges

Winston DR over Graff Canal

Good

Pinellas County, Florida · 150YD W of Bluff View Dr. · Structure no. 155000

Built
1950
75 years old, rebuilt 1984
Condition
Good
inspected January 2025
Type
Slab
Prestressed Concrete
Length
25 ft
1 main span
Daily traffic
300
2025 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Winston DR over Graff Canal is a prestressed concrete slab carrying Winston DR over Graff Canal in Pinellas County, Florida. It was built in 1950 and reconstructed in 1984, so it is 75 years old, older than the Florida average of 41.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 300 vehicles a day, roughly 2% of them trucks, projected to reach 521 by 2046. The structure is 25 ft (7.7 m) long and 29 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesWinston DR
CrossesGraff Canal
Location150YD W of Bluff View Dr.
RouteCity Street 0
CountyPinellas County
StateFlorida
Coordinates27.92489, -82.82237
Functional classUrban Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51.9 US tons
Inventory rating37.6 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length25 ft (7.7 m)
Longest span25 ft (7.7 m)
Deck width29 ft (8.7 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic300 (2025)
Projected traffic521 by 2046
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township 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 Winston DR over Graff Canal built?

It was built in 1950, making it 75 years old in 2025. It was reconstructed in 1984.

What condition is Winston DR over Graff Canal in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in January 2025.

How much traffic does Winston DR over Graff Canal carry?

About 300 vehicles per day (2025 count), of which roughly 2% are trucks.

How long is Winston DR over Graff Canal?

The structure is 25 ft (7.7 m) long with a longest span of 25 ft (7.7 m) and a deck 29 ft wide.

Who owns Winston DR over Graff Canal?

It is owned by the Town or Township Highway Agency.