US Bridges

CR-439 over Black Water Swamp

Good

Lake County, Florida · 0.14 Mile South of CR-42 · Structure no. 114049

Built
1940
85 years old, rebuilt 1960
Condition
Good
inspected August 2023
Type
Culvert
Concrete
Length
22 ft
3 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 1940 and reconstructed in 1960, so it is 85 years old, older than the Florida average of 41.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 4,500 vehicles a day, roughly 8% of them trucks, projected to reach 7,808 by 2042. The structure is 22 ft (6.8 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
Location0.14 Mile South of CR-42
RouteCounty Highway 439
CountyLake County
StateFlorida
Coordinates28.9599, -81.59388
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.5 US tons
Inventory rating34 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadH 20
Structure length22 ft (6.8 m)
Longest span7 ft (2.1 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 1940, making it 85 years old in 2025. It was reconstructed in 1960.

What condition is CR-439 over Black Water Swamp in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. 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 22 ft (6.8 m) long with a longest span of 7 ft (2.1 m).

Who owns CR-439 over Black Water Swamp?

It is owned by the County Highway Agency.