US Bridges

Lake Hendry Rd. over Sink Branch

FairPosted for load

Polk County, Florida · 0.4MI North of US-98 · Structure no. 164306

Built
1950
75 years old
Condition
Fair
inspected February 2025
Type
Slab
Concrete
Length
25 ft
1 main span
Daily traffic
800
2025 count
Owner
County
County Highway Agency

About this bridge

Lake Hendry Rd. over Sink Branch is a concrete slab carrying Lake Hendry Rd. over Sink Branch in Polk County, Florida. It was built in 1950, so it is 75 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. Its operating status is: posted for load restriction.

It carries about 800 vehicles a day, roughly 13% of them trucks, projected to reach 1,388 by 2045. The structure is 25 ft (7.7 m) long and 28 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesLake Hendry Rd.
CrossesSink Branch
Location0.4MI North of US-98
RouteCounty Highway 559
CountyPolk County
StateFlorida
Coordinates27.75286, -81.72794
Functional classRural Minor Collector

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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourCountermeasures installed to correct a previously existing problem
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 adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40.5 US tons
Inventory rating24.3 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length25 ft (7.7 m)
Longest span25 ft (7.7 m)
Deck width28 ft (8.6 m)
Roadway width25 ft (7.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic800 (2025)
Projected traffic1,388 by 2045
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 Lake Hendry Rd. over Sink Branch built?

It was built in 1950, making it 75 years old in 2025.

What condition is Lake Hendry Rd. over Sink Branch 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 February 2025.

How much traffic does Lake Hendry Rd. over Sink Branch carry?

About 800 vehicles per day (2025 count), of which roughly 13% are trucks.

How long is Lake Hendry Rd. over Sink Branch?

The structure is 25 ft (7.7 m) long with a longest span of 25 ft (7.7 m) and a deck 28 ft wide.

Who owns Lake Hendry Rd. over Sink Branch?

It is owned by the County Highway Agency.