US Bridges

CR-721A over Harney Pond Canal C-41

FairPosted for load

Glades County, Florida · 2.9MI W of CR-721 · Structure no. 054015

Built
1958
67 years old
Condition
Fair
inspected September 2023
Type
Slab
Prestressed Concrete
Length
170 ft
5 main spans
Daily traffic
160
2023 count
Owner
County
County Highway Agency

About this bridge

CR-721A over Harney Pond Canal C-41 is a prestressed concrete slab carrying CR-721A over Harney Pond Canal C-41 in Glades County, Florida. It was built in 1958, so it is 67 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 160 vehicles a day, roughly 5% of them trucks, projected to reach 200 by 2042. The structure is 170 ft (51.8 m) long and 24 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesCR-721A
CrossesHarney Pond Canal C-41
Location2.9MI W of CR-721
RouteCounty Highway 721A
StateFlorida
Coordinates27.07447, -81.11243
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating52.9 US tons
Inventory rating36.9 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans5
Design loadHS 20
Structure length170 ft (51.8 m)
Longest span34 ft (10.4 m)
Deck width24 ft (7.3 m)
Roadway width21 ft (6.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic160 (2023)
Projected traffic200 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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-721A over Harney Pond Canal C-41 built?

It was built in 1958, making it 67 years old in 2025.

What condition is CR-721A over Harney Pond Canal C-41 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 September 2023.

How much traffic does CR-721A over Harney Pond Canal C-41 carry?

About 160 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is CR-721A over Harney Pond Canal C-41?

The structure is 170 ft (51.8 m) long with a longest span of 34 ft (10.4 m) and a deck 24 ft wide.

Who owns CR-721A over Harney Pond Canal C-41?

It is owned by the County Highway Agency.