US Bridges

SR-70 over Harney Pond Canal

Fair

Highlands County, Florida · 7.9 MI East of US-27 · Structure no. 090920

Built
1960
65 years old, rebuilt 2000
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
120 ft
3 main spans
Daily traffic
5,600
2022 count
Owner
State
State Highway Agency

About this bridge

SR-70 over Harney Pond Canal is a prestressed concrete stringer/multi-beam or girder carrying SR-70 over Harney Pond Canal in Highlands County, Florida. It was built in 1960 and reconstructed in 2000, 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 5,600 vehicles a day, roughly 30% of them trucks, projected to reach 9,716 by 2044. The structure is 120 ft (36.6 m) long and 46 ft wide. If it were closed, the detour would be 41.6 mi (67 km).

Location

Open in Google Maps
CarriesSR-70
CrossesHarney Pond Canal
Location7.9 MI East of US-27
RouteState Highway 70
CountyHighlands County
StateFlorida
Coordinates27.20908, -81.20108
Functional classRural Principal Arterial - Other

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69.4 US tons
Inventory rating41.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length120 ft (36.6 m)
Longest span40 ft (12.2 m)
Deck width46 ft (14.1 m)
Roadway width43 ft (13.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,600 (2022)
Projected traffic9,716 by 2044
Trucks30%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed41.6 mi (67 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.1 million
NavigationNo navigation control on waterway

Frequently asked questions

When was SR-70 over Harney Pond Canal built?

It was built in 1960, making it 65 years old in 2025. It was reconstructed in 2000.

What condition is SR-70 over Harney Pond Canal 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 April 2023.

How much traffic does SR-70 over Harney Pond Canal carry?

About 5,600 vehicles per day (2022 count), of which roughly 30% are trucks.

How long is SR-70 over Harney Pond Canal?

The structure is 120 ft (36.6 m) long with a longest span of 40 ft (12.2 m) and a deck 46 ft wide.

Who owns SR-70 over Harney Pond Canal?

It is owned by the State Highway Agency.