US Bridges

West Marion Avenue over Tarpon Inlet

Fair

Charlotte County, Florida · 0.3MI E of Colony Point · Structure no. 015004

Built
1986
39 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
98 ft
3 main spans
Daily traffic
4,800
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

West Marion Avenue over Tarpon Inlet is a prestressed concrete stringer/multi-beam or girder carrying West Marion Avenue over Tarpon Inlet in Charlotte County, Florida. It was built in 1986, so it is 39 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 4,800 vehicles a day, roughly 5% of them trucks, projected to reach 8,328 by 2042. The structure is 98 ft (29.9 m) long and 37 ft wide. If it were closed, the detour would be 123 mi (198 km).

Location

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CarriesWest Marion Avenue
CrossesTarpon Inlet
Location0.3MI E of Colony Point
RouteCity Street 0
CountyCharlotte County
StateFlorida
Coordinates26.91713, -82.08641
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than 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 alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating54 US tons
Inventory rating32.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length98 ft (29.9 m)
Longest span46 ft (14 m)
Deck width37 ft (11.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,800 (2023)
Projected traffic8,328 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed123 mi (198 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 West Marion Avenue over Tarpon Inlet built?

It was built in 1986, making it 39 years old in 2025.

What condition is West Marion Avenue over Tarpon Inlet 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 May 2023.

How much traffic does West Marion Avenue over Tarpon Inlet carry?

About 4,800 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is West Marion Avenue over Tarpon Inlet?

The structure is 98 ft (29.9 m) long with a longest span of 46 ft (14 m) and a deck 37 ft wide.

Who owns West Marion Avenue over Tarpon Inlet?

It is owned by the City or Municipal Highway Agency.