US Bridges

SR189 over Lightwood Knot Creek

Fair

Okaloosa County, Florida · 2.2MI West of SR85 · Structure no. 570003

Built
1971
54 years old
Condition
Fair
inspected May 2024
Type
Culvert
Concrete
Length
36 ft
3 main spans
Daily traffic
35,500
2022 count
Owner
State
State Highway Agency

About this bridge

SR189 over Lightwood Knot Creek is a concrete culvert carrying SR189 over Lightwood Knot Creek in Okaloosa County, Florida. It was built in 1971, so it is 54 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 35,500 vehicles a day, roughly 6% of them trucks, projected to reach 61,592 by 2044. The structure is 36 ft (11.1 m) long. If it were closed, the detour would be 1.9 mi (3 km).

CarriesSR189
CrossesLightwood Knot Creek
Location2.2MI West of SR85
RouteState Highway 189
StateFlorida
Coordinates30.47775, -86.59603
Functional classUrban Minor Arterial

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 protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length36 ft (11.1 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 traffic35,500 (2022)
Projected traffic61,592 by 2044
Trucks6%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

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 SR189 over Lightwood Knot Creek built?

It was built in 1971, making it 54 years old in 2025.

What condition is SR189 over Lightwood Knot Creek 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 May 2024.

How much traffic does SR189 over Lightwood Knot Creek carry?

About 35,500 vehicles per day (2022 count), of which roughly 6% are trucks.

How long is SR189 over Lightwood Knot Creek?

The structure is 36 ft (11.1 m) long with a longest span of 11 ft (3.5 m).

Who owns SR189 over Lightwood Knot Creek?

It is owned by the State Highway Agency.