US Bridges

Main Road over Myakka River

Fair

Sarasota County, Florida · Myakka River State Park · Structure no. 170401

Built
1940
85 years old
Condition
Fair
inspected October 2024
Type
Slab
Concrete
Length
200 ft
10 main spans
Daily traffic
610
2024 count
Owner
State
State Park, Forest, or Reservation Agency

About this bridge

Main Road over Myakka River is a concrete slab carrying Main Road over Myakka River in Sarasota County, Florida. It was built in 1940, so it is 85 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 610 vehicles a day, roughly 2% of them trucks, projected to reach 1,058 by 2042. The structure is 200 ft (61 m) long and 26 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

Location

Open in Google Maps
CarriesMain Road
CrossesMyakka River
LocationMyakka River State Park
RouteState Lands Road 0
CountySarasota County
StateFlorida
Coordinates27.24563, -82.307
Functional classRural Local

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating37.9 US tons
Inventory rating22.7 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans10
Design loadH 15
Structure length200 ft (61 m)
Longest span20 ft (6.1 m)
Deck width26 ft (7.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic610 (2024)
Projected traffic1,058 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Park, Forest, or Reservation Agency
Maintained byState Park, Forest, or Reservation Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Main Road over Myakka River built?

It was built in 1940, making it 85 years old in 2025.

What condition is Main Road over Myakka River 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 October 2024.

How much traffic does Main Road over Myakka River carry?

About 610 vehicles per day (2024 count), of which roughly 2% are trucks.

How long is Main Road over Myakka River?

The structure is 200 ft (61 m) long with a longest span of 20 ft (6.1 m) and a deck 26 ft wide.

Who owns Main Road over Myakka River?

It is owned by the State Park, Forest, or Reservation Agency.