US Bridges

CR-621 over Istokpoga Creek

FairPosted for load

Highlands County, Florida · 2.9MI South of US-98 · Structure no. 090010

Built
1959
66 years old
Condition
Fair
inspected June 2024
Type
Slab
Concrete
Length
160 ft
8 main spans
Daily traffic
600
2024 count
Owner
County
County Highway Agency

About this bridge

CR-621 over Istokpoga Creek is a concrete slab carrying CR-621 over Istokpoga Creek in Highlands County, Florida. It was built in 1959, so it is 66 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. Its operating status is: posted for load restriction.

It carries about 600 vehicles a day, roughly 27% of them trucks, projected to reach 1,041 by 2044. The structure is 160 ft (48.8 m) long and 26 ft wide. If it were closed, the detour would be 42.9 mi (69 km).

Location

Open in Google Maps
CarriesCR-621
CrossesIstokpoga Creek
Location2.9MI South of US-98
RouteCounty Highway 621
CountyHighlands County
StateFlorida
Coordinates27.38036, -81.20392
Functional classRural Major 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41 US tons
Inventory rating24.6 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans8
Design loadH 15
Structure length160 ft (48.8 m)
Longest span20 ft (6.1 m)
Deck width26 ft (7.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic600 (2024)
Projected traffic1,041 by 2044
Trucks27%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed42.9 mi (69 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-621 over Istokpoga Creek built?

It was built in 1959, making it 66 years old in 2025.

What condition is CR-621 over Istokpoga 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 June 2024.

How much traffic does CR-621 over Istokpoga Creek carry?

About 600 vehicles per day (2024 count), of which roughly 27% are trucks.

How long is CR-621 over Istokpoga Creek?

The structure is 160 ft (48.8 m) long with a longest span of 20 ft (6.1 m) and a deck 26 ft wide.

Who owns CR-621 over Istokpoga Creek?

It is owned by the County Highway Agency.