US Bridges

SR-228 (hart Bdg.) over St. Johns River/Highland

Fair

Duval County, Florida · US-A1 over St.Johns River · Structure no. 720107

Built
1967
58 years old
Condition
Fair
inspected June 2023
Type
Truss - Thru
Steel Continuous
Length
3,844 ft
3 main spans
Daily traffic
37,000
2022 count
Owner
State
State Highway Agency

About this bridge

SR-228 (hart Bdg.) over St. Johns River/Highland is a steel continuous truss - thru carrying SR-228 (hart Bdg.) over St. Johns River/Highland in Duval County, Florida. It was built in 1967, so it is 58 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 5 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 37,000 vehicles a day, roughly 13% of them trucks, projected to reach 64,195 by 2044. The structure is 3,844 ft (1,171.7 m) long and 65 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesSR-228 (hart Bdg.)
CrossesSt. Johns River/Highland
LocationUS-A1 over St.Johns River
RouteState Highway 228
StateFlorida
Coordinates30.31556, -81.6275
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
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 rating32 US tons
Inventory rating23.4 US tons

Structure

Structure typeTruss - Thru
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3 (+14 approach)
Design loadHS 20
Structure length3,844 ft (1,171.7 m)
Longest span1,088 ft (331.6 m)
Deck width65 ft (19.9 m)
Roadway width55 ft (16.9 m)
Vertical clearance over deck18 ft (5.6 m)

Traffic and service

Average daily traffic37,000 (2022)
Projected traffic64,195 by 2044
Trucks13%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and waterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$255,000
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was SR-228 (hart Bdg.) over St. Johns River/Highland built?

It was built in 1967, making it 58 years old in 2025.

What condition is SR-228 (hart Bdg.) over St. Johns River/Highland 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 2023.

How much traffic does SR-228 (hart Bdg.) over St. Johns River/Highland carry?

About 37,000 vehicles per day (2022 count), of which roughly 13% are trucks.

How long is SR-228 (hart Bdg.) over St. Johns River/Highland?

The structure is 3,844 ft (1,171.7 m) long with a longest span of 1,088 ft (331.6 m) and a deck 65 ft wide.

Who owns SR-228 (hart Bdg.) over St. Johns River/Highland?

It is owned by the State Highway Agency.