US Bridges

SR-40 over St. Johns River

Fair

Lake County, Florida · SR-40 over St. Johns Ri. · Structure no. 110077

Built
1980
45 years old
Condition
Fair
inspected April 2024
Type
Movable - Bascule
Steel
Length
515 ft
1 main span
Daily traffic
7,200
2024 count
Owner
State
State Highway Agency

About this bridge

SR-40 over St. Johns River is a steel movable - bascule carrying SR-40 over St. Johns River in Lake County, Florida. It was built in 1980, so it is 45 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 7,200 vehicles a day, roughly 16% of them trucks, projected to reach 12,492 by 2044. The structure is 515 ft (157 m) long and 52 ft wide. If it were closed, the detour would be 65.2 mi (105 km).

Location

Open in Google Maps
CarriesSR-40
CrossesSt. Johns River
LocationSR-40 over St. Johns Ri.
RouteState Highway 40
CountyLake County
StateFlorida
Coordinates29.16748, -81.52306
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 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 geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating55.8 US tons
Inventory rating34.2 US tons

Structure

Structure typeMovable - Bascule
MaterialSteel
DeckOpen grating
Main spans1 (+6 approach)
Design loadHS 20
Structure length515 ft (157 m)
Longest span121 ft (37 m)
Deck width52 ft (16 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deck16 ft (4.9 m)

Traffic and service

Average daily traffic7,200 (2024)
Projected traffic12,492 by 2044
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed65.2 mi (105 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$623,000
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was SR-40 over St. Johns River built?

It was built in 1980, making it 45 years old in 2025.

What condition is SR-40 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 April 2024.

How much traffic does SR-40 over St. Johns River carry?

About 7,200 vehicles per day (2024 count), of which roughly 16% are trucks.

How long is SR-40 over St. Johns River?

The structure is 515 ft (157 m) long with a longest span of 121 ft (37 m) and a deck 52 ft wide.

Who owns SR-40 over St. Johns River?

It is owned by the State Highway Agency.