US Bridges

Plympton Road over Murder Creek

Good

Okaloosa County, Florida · 1.6MI. West of SR 85 · Structure no. 574200

Built
2022
3 years old
Condition
Good
inspected August 2024
Type
Channel Beam
Concrete
Length
68 ft
2 main spans
Daily traffic
300
2024 count
Owner
County
County Highway Agency

About this bridge

Plympton Road over Murder Creek is a concrete channel beam carrying Plympton Road over Murder Creek in Okaloosa County, Florida. It was built in 2022, so it is 3 years old, younger 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 300 vehicles a day, roughly 1% of them trucks, projected to reach 521 by 2046. The structure is 68 ft (20.8 m) long and 27 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesPlympton Road
CrossesMurder Creek
Location1.6MI. West of SR 85
RouteCounty Highway 0
StateFlorida
Coordinates30.91019, -86.51497
Functional classRural Local

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure9 ExcellentNo problems noted.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating50 US tons
Inventory rating38.5 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length68 ft (20.8 m)
Longest span34 ft (10.4 m)
Deck width27 ft (8.2 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic300 (2024)
Projected traffic521 by 2046
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
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 Plympton Road over Murder Creek built?

It was built in 2022, making it 3 years old in 2025.

What condition is Plympton Road over Murder Creek 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 2024.

How much traffic does Plympton Road over Murder Creek carry?

About 300 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is Plympton Road over Murder Creek?

The structure is 68 ft (20.8 m) long with a longest span of 34 ft (10.4 m) and a deck 27 ft wide.

Who owns Plympton Road over Murder Creek?

It is owned by the County Highway Agency.