US Bridges

SR 570 Polk 17.1 over CSX RR

Good

Polk County, Florida · 17.2 MI E of I-4 West · Structure no. 160275

Built
1998
27 years old
Condition
Good
inspected March 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
110 ft
1 main span
Daily traffic
9,100
2022 count
Owner
Toll Authority
State Toll Authority

About this bridge

SR 570 Polk 17.1 over CSX RR is a prestressed concrete stringer/multi-beam or girder carrying SR 570 Polk 17.1 over CSX RR in Polk County, Florida. It was built in 1998, so it is 27 years old, younger 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 9,100 vehicles a day, roughly 15% of them trucks, projected to reach 15,788 by 2044. The structure is 110 ft (33.5 m) long and 55 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSR 570 Polk 17.1
CrossesCSX RR
Location17.2 MI E of I-4 West
RouteState Highway 570
CountyPolk County
StateFlorida
Coordinates28.05127, -81.83441
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41.4 US tons
Inventory rating37.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length110 ft (33.5 m)
Longest span110 ft (33.5 m)
Deck width55 ft (16.8 m)
Roadway width52 ft (15.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,100 (2022)
Projected traffic15,788 by 2044
Trucks15%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
Detour if closed1.2 mi (2 km)
TollOn a toll road
National Highway SystemYes

Ownership and planned work

OwnerState Toll Authority
Maintained byState Toll Authority
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 570 Polk 17.1 over CSX RR built?

It was built in 1998, making it 27 years old in 2025.

What condition is SR 570 Polk 17.1 over CSX RR 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 March 2024.

How much traffic does SR 570 Polk 17.1 over CSX RR carry?

About 9,100 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is SR 570 Polk 17.1 over CSX RR?

The structure is 110 ft (33.5 m) long with a longest span of 110 ft (33.5 m) and a deck 55 ft wide.

Who owns SR 570 Polk 17.1 over CSX RR?

It is owned by the State Toll Authority.