US Bridges

SR-539 Kathleen RD over I-4 (SR-400)

Fair

Polk County, Florida · 0.8 MI S/O CR-582 · Structure no. 160328

Built
2005
20 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
325 ft
2 main spans
Daily traffic
35,500
2024 count
Owner
State
State Highway Agency

About this bridge

SR-539 Kathleen RD over I-4 (SR-400) is a prestressed concrete stringer/multi-beam or girder carrying SR-539 Kathleen RD over I-4 (SR-400) in Polk County, Florida. It was built in 2005, so it is 20 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 35,500 vehicles a day, roughly 8% of them trucks, projected to reach 44,375 by 2044. The structure is 325 ft (99.2 m) long and 124 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesSR-539 Kathleen RD
CrossesI-4 (SR-400)
Location0.8 MI S/O CR-582
RouteState Highway 539
CountyPolk County
StateFlorida
Coordinates28.07274, -81.98686
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.
Substructure7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.1 US tons
Inventory rating23.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length325 ft (99.2 m)
Longest span163 ft (49.7 m)
Deck width124 ft (37.7 m)
Roadway width108 ft (32.9 m)
Vertical clearance over deck99 ft (30.2 m)

Traffic and service

Average daily traffic35,500 (2024)
Projected traffic44,375 by 2044
Trucks8%
Lanes on structure8
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.9 mi (3 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR-539 Kathleen RD over I-4 (SR-400) built?

It was built in 2005, making it 20 years old in 2025.

What condition is SR-539 Kathleen RD over I-4 (SR-400) 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 July 2024.

How much traffic does SR-539 Kathleen RD over I-4 (SR-400) carry?

About 35,500 vehicles per day (2024 count), of which roughly 8% are trucks.

How long is SR-539 Kathleen RD over I-4 (SR-400)?

The structure is 325 ft (99.2 m) long with a longest span of 163 ft (49.7 m) and a deck 124 ft wide.

Who owns SR-539 Kathleen RD over I-4 (SR-400)?

It is owned by the State Highway Agency.