US Bridges

I-4 (SR-400) over Winston Drain

Good

Polk County, Florida · 0.5 MI E/O Polk Pkwy · Structure no. 160303

Built
1999
26 years old
Condition
Good
inspected July 2024
Type
Culvert
Concrete
Length
22 ft
2 main spans
Daily traffic
127,000
2024 count
Owner
State
State Highway Agency

About this bridge

I-4 (SR-400) over Winston Drain is a concrete culvert carrying I-4 (SR-400) over Winston Drain in Polk County, Florida. It was built in 1999, so it is 26 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 127,000 vehicles a day, roughly 16% of them trucks, projected to reach 158,750 by 2044. The structure is 22 ft (6.7 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesI-4 (SR-400)
CrossesWinston Drain
Location0.5 MI E/O Polk Pkwy
RouteInterstate 4
CountyPolk County
StateFlorida
Coordinates28.04012, -82.032
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating82.5 US tons
Inventory rating49.5 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length22 ft (6.7 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic127,000 (2024)
Projected traffic158,750 by 2044
Trucks16%
Lanes on structure11
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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—
NavigationNo navigation control on waterway

Frequently asked questions

When was I-4 (SR-400) over Winston Drain built?

It was built in 1999, making it 26 years old in 2025.

What condition is I-4 (SR-400) over Winston Drain 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 July 2024.

How much traffic does I-4 (SR-400) over Winston Drain carry?

About 127,000 vehicles per day (2024 count), of which roughly 16% are trucks.

How long is I-4 (SR-400) over Winston Drain?

The structure is 22 ft (6.7 m) long with a longest span of 10 ft (3 m).

Who owns I-4 (SR-400) over Winston Drain?

It is owned by the State Highway Agency.