US Bridges

CR 399 over Tom King Bayou

Fair

Santa Rosa County, Florida · 0.74 MI E of Edgewood DR · Structure no. 580063

Built
1962
63 years old
Condition
Fair
inspected March 2024
Type
Slab
Concrete
Length
130 ft
5 main spans
Daily traffic
11,100
2022 count
Owner
County
County Highway Agency

About this bridge

CR 399 over Tom King Bayou is a concrete slab carrying CR 399 over Tom King Bayou in Santa Rosa County, Florida. It was built in 1962, so it is 63 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 11,100 vehicles a day, roughly 3% of them trucks, projected to reach 19,259 by 2042. The structure is 130 ft (39.6 m) long and 33 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesCR 399
CrossesTom King Bayou
Location0.74 MI E of Edgewood DR
RouteCounty Highway 399
CountySanta Rosa County
StateFlorida
Coordinates30.44601, -86.93628
Functional classUrban 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55 US tons
Inventory rating33 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length130 ft (39.6 m)
Longest span26 ft (8 m)
Deck width33 ft (10.2 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,100 (2022)
Projected traffic19,259 by 2042
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.7 mi (6 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 399 over Tom King Bayou built?

It was built in 1962, making it 63 years old in 2025.

What condition is CR 399 over Tom King Bayou 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 March 2024.

How much traffic does CR 399 over Tom King Bayou carry?

About 11,100 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is CR 399 over Tom King Bayou?

The structure is 130 ft (39.6 m) long with a longest span of 26 ft (8 m) and a deck 33 ft wide.

Who owns CR 399 over Tom King Bayou?

It is owned by the County Highway Agency.