US Bridges

SR-46 over St. Johns River

Fair

Volusia County, Florida · SR-46 - St. Johns River · Structure no. 790030

Built
1959
66 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
1,220 ft
30 main spans
Daily traffic
4,800
2022 count
Owner
State
State Highway Agency

About this bridge

SR-46 over St. Johns River is a prestressed concrete stringer/multi-beam or girder carrying SR-46 over St. Johns River in Volusia 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.

It carries about 4,800 vehicles a day, roughly 6% of them trucks, projected to reach 8,328 by 2044. The structure is 1,220 ft (371.9 m) long and 36 ft wide. If it were closed, the detour would be 24.2 mi (39 km).

Location

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CarriesSR-46
CrossesSt. Johns River
LocationSR-46 - St. Johns River
RouteState Highway 46
CountyVolusia County
StateFlorida
Coordinates28.71405, -81.03413
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
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 alignment8: Equal to present desirable criteria
Operating rating44.8 US tons
Inventory rating26.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans30
Design loadH 20
Structure length1,220 ft (371.9 m)
Longest span60 ft (18.3 m)
Deck width36 ft (11 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,800 (2022)
Projected traffic8,328 by 2044
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed24.2 mi (39 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$331,000
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was SR-46 over St. Johns River built?

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

What condition is SR-46 over St. Johns River 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 August 2024.

How much traffic does SR-46 over St. Johns River carry?

About 4,800 vehicles per day (2022 count), of which roughly 6% are trucks.

How long is SR-46 over St. Johns River?

The structure is 1,220 ft (371.9 m) long with a longest span of 60 ft (18.3 m) and a deck 36 ft wide.

Who owns SR-46 over St. Johns River?

It is owned by the State Highway Agency.