US Bridges

Hefferon Drive Ext over Heritage Park Canal

FairPosted for load

St. Johns County, Florida · 0.8 MI S of Woodlawn RD · Structure no. 784067

Built
2006
19 years old
Condition
Fair
inspected September 2024
Type
Truss - Thru
Steel
Length
57 ft
1 main span
Daily traffic
101
2024 count
Owner
County
County Highway Agency

About this bridge

Hefferon Drive Ext over Heritage Park Canal is a steel truss - thru carrying Hefferon Drive Ext over Heritage Park Canal in St. Johns County, Florida. It was built in 2006, so it is 19 years old, younger 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 101 vehicles a day, roughly 1% of them trucks, projected to reach 174 by 2046. The structure is 57 ft (17.5 m) long and 32 ft wide. If it were closed, the detour would be 100 mi (161 km).

Location

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CarriesHefferon Drive Ext
CrossesHeritage Park Canal
Location0.8 MI S of Woodlawn RD
RouteCounty Highway 0
CountySt. Johns County
StateFlorida
Coordinates29.92703, -81.34806
Functional classUrban 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
Deck8 Very GoodNo problems noted.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51.6 US tons
Inventory rating30.9 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length57 ft (17.5 m)
Longest span57 ft (17.5 m)
Deck width32 ft (9.8 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic101 (2024)
Projected traffic174 by 2046
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed100 mi (161 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 Hefferon Drive Ext over Heritage Park Canal built?

It was built in 2006, making it 19 years old in 2025.

What condition is Hefferon Drive Ext over Heritage Park 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 September 2024.

How much traffic does Hefferon Drive Ext over Heritage Park Canal carry?

About 101 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is Hefferon Drive Ext over Heritage Park Canal?

The structure is 57 ft (17.5 m) long with a longest span of 57 ft (17.5 m) and a deck 32 ft wide.

Who owns Hefferon Drive Ext over Heritage Park Canal?

It is owned by the County Highway Agency.