US Bridges

CR-439 over Black Water Swamp

Fair

Lake County, Florida · 0.39 Mile South of CR-42 · Structure no. 114021

Built
1960
65 years old
Condition
Fair
inspected August 2023
Type
Culvert
Concrete
Length
23 ft
2 main spans
Daily traffic
4,500
2023 count
Owner
County
County Highway Agency

About this bridge

CR-439 over Black Water Swamp is a concrete culvert carrying CR-439 over Black Water Swamp in Lake County, Florida. It was built in 1960, 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 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 4,500 vehicles a day, roughly 8% of them trucks, projected to reach 7,808 by 2042. The structure is 23 ft (7.1 m) long. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesCR-439
CrossesBlack Water Swamp
Location0.39 Mile South of CR-42
RouteCounty Highway 439
CountyLake County
StateFlorida
Coordinates28.95633, -81.59384
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51.6 US tons
Inventory rating30.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadH 15
Structure length23 ft (7.1 m)
Longest span11 ft (3.5 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,500 (2023)
Projected traffic7,808 by 2042
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 CR-439 over Black Water Swamp built?

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

What condition is CR-439 over Black Water Swamp 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 2023.

How much traffic does CR-439 over Black Water Swamp carry?

About 4,500 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is CR-439 over Black Water Swamp?

The structure is 23 ft (7.1 m) long with a longest span of 11 ft (3.5 m).

Who owns CR-439 over Black Water Swamp?

It is owned by the County Highway Agency.