US Bridges

SR-789 SB over Coon Key Waterway

Fair

Sarasota County, Florida · 1.4 MI W of US-41 · Structure no. 170951

Built
1958
67 years old
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
1,010 ft
21 main spans
Daily traffic
32,000
2025 count
Owner
State
State Highway Agency

About this bridge

SR-789 SB over Coon Key Waterway is a prestressed concrete stringer/multi-beam or girder carrying SR-789 SB over Coon Key Waterway in Sarasota County, Florida. It was built in 1958, so it is 67 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 32,000 vehicles a day, roughly 4% of them trucks, projected to reach 55,520 by 2045. The structure is 1,010 ft (307.9 m) long and 37 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesSR-789 SB
CrossesCoon Key Waterway
Location1.4 MI W of US-41
RouteState Highway 789
StateFlorida
Coordinates27.32431, -82.56603
Functional classUrban Minor Arterial

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41 US tons
Inventory rating33 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans21
Design loadH 15
Structure length1,010 ft (307.9 m)
Longest span48 ft (14.6 m)
Deck width37 ft (11.4 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic32,000 (2025)
Projected traffic55,520 by 2045
Trucks4%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

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 SR-789 SB over Coon Key Waterway built?

It was built in 1958, making it 67 years old in 2025.

What condition is SR-789 SB over Coon Key Waterway 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 January 2025.

How much traffic does SR-789 SB over Coon Key Waterway carry?

About 32,000 vehicles per day (2025 count), of which roughly 4% are trucks.

How long is SR-789 SB over Coon Key Waterway?

The structure is 1,010 ft (307.9 m) long with a longest span of 48 ft (14.6 m) and a deck 37 ft wide.

Who owns SR-789 SB over Coon Key Waterway?

It is owned by the State Highway Agency.