US Bridges

I-75 (SR-93) NB over Myakka River

Fair

Sarasota County, Florida · 0.5MI E of SR-777 · Structure no. 170128

Built
1979
46 years old, rebuilt 2006
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
500 ft
10 main spans
Daily traffic
36,000
2023 count
Owner
State
State Highway Agency

About this bridge

I-75 (SR-93) NB over Myakka River is a prestressed concrete stringer/multi-beam or girder carrying I-75 (SR-93) NB over Myakka River in Sarasota County, Florida. It was built in 1979 and reconstructed in 2006, so it is 46 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 36,000 vehicles a day, roughly 13% of them trucks, projected to reach 62,460 by 2042. The structure is 500 ft (152.4 m) long and 60 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesI-75 (SR-93) NB
CrossesMyakka River
Location0.5MI E of SR-777
RouteInterstate 75
CountySarasota County
StateFlorida
Coordinates27.11128, -82.33946
Functional classRural Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.7 US tons
Inventory rating36.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans10
Design loadHS 20
Structure length500 ft (152.4 m)
Longest span51 ft (15.4 m)
Deck width60 ft (18.4 m)
Roadway width57 ft (17.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic36,000 (2023)
Projected traffic62,460 by 2042
Trucks13%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 I-75 (SR-93) NB over Myakka River built?

It was built in 1979, making it 46 years old in 2025. It was reconstructed in 2006.

What condition is I-75 (SR-93) NB 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 March 2023.

How much traffic does I-75 (SR-93) NB over Myakka River carry?

About 36,000 vehicles per day (2023 count), of which roughly 13% are trucks.

How long is I-75 (SR-93) NB over Myakka River?

The structure is 500 ft (152.4 m) long with a longest span of 51 ft (15.4 m) and a deck 60 ft wide.

Who owns I-75 (SR-93) NB over Myakka River?

It is owned by the State Highway Agency.