US Bridges

SR30 US98 over Kohler Bayou

Fair

Okaloosa County, Florida · 5.5MI W of SR189 · Structure no. 570012

Built
1964
61 years old
Condition
Fair
inspected June 2024
Type
Culvert
Concrete
Length
25 ft
3 main spans
Daily traffic
43,500
2023 count
Owner
State
State Highway Agency

About this bridge

SR30 US98 over Kohler Bayou is a concrete culvert carrying SR30 US98 over Kohler Bayou in Okaloosa County, Florida. It was built in 1964, so it is 61 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 43,500 vehicles a day, roughly 6% of them trucks, projected to reach 75,255 by 2045. The structure is 25 ft (7.7 m) long. If it were closed, the detour would be 60.3 mi (97 km).

Location

Open in Google Maps
CarriesSR30 US98
CrossesKohler Bayou
Location5.5MI W of SR189
RouteU.S. Route 98
CountyOkaloosa County
StateFlorida
Coordinates30.41048, -86.68472
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
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 rating89.9 US tons
Inventory rating54 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length25 ft (7.7 m)
Longest span8 ft (2.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic43,500 (2023)
Projected traffic75,255 by 2045
Trucks6%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed60.3 mi (97 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR30 US98 over Kohler Bayou built?

It was built in 1964, making it 61 years old in 2025.

What condition is SR30 US98 over Kohler 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 June 2024.

How much traffic does SR30 US98 over Kohler Bayou carry?

About 43,500 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is SR30 US98 over Kohler Bayou?

The structure is 25 ft (7.7 m) long with a longest span of 8 ft (2.4 m).

Who owns SR30 US98 over Kohler Bayou?

It is owned by the State Highway Agency.