US Bridges

I-75 (SR-93) SB over Myakka River Relief

Good

Sarasota County, Florida · 0.4MI S of River Rd. · Structure no. 170088

Built
1979
46 years old, rebuilt 2004
Condition
Good
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
126 ft
3 main spans
Daily traffic
36,000
2023 count
Owner
State
State Highway Agency

About this bridge

I-75 (SR-93) SB over Myakka River Relief is a prestressed concrete stringer/multi-beam or girder carrying I-75 (SR-93) SB over Myakka River Relief in Sarasota County, Florida. It was built in 1979 and reconstructed in 2004, 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 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 36,000 vehicles a day, roughly 13% of them trucks, projected to reach 62,460 by 2042. The structure is 126 ft (38.4 m) long and 64 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesI-75 (SR-93) SB
CrossesMyakka River Relief
Location0.4MI S of River Rd.
RouteInterstate 75
CountySarasota County
StateFlorida
Coordinates27.11069, -82.34217
Functional classRural Principal Arterial - Interstate

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 protection7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.2 US tons
Inventory rating37.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length126 ft (38.4 m)
Longest span42 ft (12.8 m)
Deck width64 ft (19.6 m)
Roadway width61 ft (18.6 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
CrossesRelief for waterway
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) SB over Myakka River Relief built?

It was built in 1979, making it 46 years old in 2025. It was reconstructed in 2004.

What condition is I-75 (SR-93) SB over Myakka River Relief 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 March 2023.

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

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

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

The structure is 126 ft (38.4 m) long with a longest span of 42 ft (12.8 m) and a deck 64 ft wide.

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

It is owned by the State Highway Agency.