US Bridges

CR 609A Shinn RD over C-24 Canal

Good

St. Lucie County, Florida · 3MI S of SR-70 · Structure no. 940018

Built
1961
64 years old
Condition
Good
inspected January 2025
Type
Slab
Concrete
Length
176 ft
7 main spans
Daily traffic
1,100
2025 count
Owner
County
County Highway Agency

About this bridge

CR 609A Shinn RD over C-24 Canal is a concrete slab carrying CR 609A Shinn RD over C-24 Canal in St. Lucie County, Florida. It was built in 1961, so it is 64 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 1,100 vehicles a day, roughly 10% of them trucks, projected to reach 1,375 by 2047. The structure is 176 ft (53.5 m) long and 26 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesCR 609A Shinn RD
CrossesC-24 Canal
Location3MI S of SR-70
RouteCounty Highway 609A
StateFlorida
Coordinates27.33808, -80.47345
Functional classRural Local

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 inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating47.2 US tons
Inventory rating28.3 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans7
Design loadH 15
Structure length176 ft (53.5 m)
Longest span28 ft (8.5 m)
Deck width26 ft (7.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,100 (2025)
Projected traffic1,375 by 2047
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 CR 609A Shinn RD over C-24 Canal built?

It was built in 1961, making it 64 years old in 2025.

What condition is CR 609A Shinn RD over C-24 Canal 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 January 2025.

How much traffic does CR 609A Shinn RD over C-24 Canal carry?

About 1,100 vehicles per day (2025 count), of which roughly 10% are trucks.

How long is CR 609A Shinn RD over C-24 Canal?

The structure is 176 ft (53.5 m) long with a longest span of 28 ft (8.5 m) and a deck 26 ft wide.

Who owns CR 609A Shinn RD over C-24 Canal?

It is owned by the County Highway Agency.