US Bridges

Dean Still Rd. over Pony Creek

Fair

Polk County, Florida · 1.0 MI West of SR-33 · Structure no. 164149

Built
1960
65 years old
Condition
Fair
inspected May 2023
Type
Channel Beam
Prestressed Concrete
Length
60 ft
3 main spans
Daily traffic
3,400
2023 count
Owner
County
County Highway Agency

About this bridge

Dean Still Rd. over Pony Creek is a prestressed concrete channel beam carrying Dean Still Rd. over Pony Creek in Polk County, Florida. It was built in 1960, so it is 65 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.

It carries about 3,400 vehicles a day, roughly 17% of them trucks, projected to reach 5,899 by 2042. The structure is 60 ft (18.3 m) long and 31 ft wide. If it were closed, the detour would be 13.7 mi (22 km).

Location

Open in Google Maps
CarriesDean Still Rd.
CrossesPony Creek
Location1.0 MI West of SR-33
RouteCounty Highway 0
CountyPolk County
StateFlorida
Coordinates28.25854, -81.8426
Functional classRural Local

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41.8 US tons
Inventory rating24.8 US tons

Structure

Structure typeChannel Beam
MaterialPrestressed Concrete
DeckOther
Main spans3
Design loadHS 20
Structure length60 ft (18.3 m)
Longest span20 ft (6.1 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,400 (2023)
Projected traffic5,899 by 2042
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13.7 mi (22 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 Dean Still Rd. over Pony Creek built?

It was built in 1960, making it 65 years old in 2025.

What condition is Dean Still Rd. over Pony Creek 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 May 2023.

How much traffic does Dean Still Rd. over Pony Creek carry?

About 3,400 vehicles per day (2023 count), of which roughly 17% are trucks.

How long is Dean Still Rd. over Pony Creek?

The structure is 60 ft (18.3 m) long with a longest span of 20 ft (6.1 m) and a deck 31 ft wide.

Who owns Dean Still Rd. over Pony Creek?

It is owned by the County Highway Agency.