US Bridges

CR-540A over Triangle Lake

Fair

Polk County, Florida · 0.2 MI West of SR-37 · Structure no. 164528

Built
2007
18 years old
Condition
Fair
inspected September 2023
Type
Slab
Concrete Continuous
Length
611 ft
20 main spans
Daily traffic
9,000
2023 count
Owner
County
County Highway Agency

About this bridge

CR-540A over Triangle Lake is a concrete continuous slab carrying CR-540A over Triangle Lake in Polk County, Florida. It was built in 2007, so it is 18 years old, younger 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 9,000 vehicles a day, roughly 14% of them trucks, projected to reach 15,615 by 2042. The structure is 611 ft (186.2 m) long and 75 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesCR-540A
CrossesTriangle Lake
Location0.2 MI West of SR-37
RouteCounty Highway 540A
CountyPolk County
StateFlorida
Coordinates27.95349, -81.97118
Functional classUrban 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 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 geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.3 US tons
Inventory rating41.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans20
Design loadHS 25 or greater
Structure length611 ft (186.2 m)
Longest span31 ft (9.4 m)
Deck width75 ft (23 m)
Roadway width68 ft (20.7 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic9,000 (2023)
Projected traffic15,615 by 2042
Trucks14%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 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-540A over Triangle Lake built?

It was built in 2007, making it 18 years old in 2025.

What condition is CR-540A over Triangle Lake 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 September 2023.

How much traffic does CR-540A over Triangle Lake carry?

About 9,000 vehicles per day (2023 count), of which roughly 14% are trucks.

How long is CR-540A over Triangle Lake?

The structure is 611 ft (186.2 m) long with a longest span of 31 ft (9.4 m) and a deck 75 ft wide.

Who owns CR-540A over Triangle Lake?

It is owned by the County Highway Agency.