US Bridges

Whitfield Road over Manning Creek

PoorPosted for load

Santa Rosa County, Florida · 0.9 MI West of Lewis RD · Structure no. 584134

Built
1990
35 years old
Condition
Poor
inspected December 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
57 ft
4 main spans
Daily traffic
200
2024 count
Owner
County
County Highway Agency

About this bridge

Whitfield Road over Manning Creek is a wood or timber stringer/multi-beam or girder carrying Whitfield Road over Manning Creek in Santa Rosa County, Florida. It was built in 1990, so it is 35 years old, younger than the Florida average of 41.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 200 vehicles a day, roughly 1% of them trucks, projected to reach 347 by 2045. The structure is 57 ft (17.3 m) long and 20 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesWhitfield Road
CrossesManning Creek
Location0.9 MI West of Lewis RD
RouteCounty Highway 399
StateFlorida
Coordinates30.88155, -87.0303
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating18.4 US tons
Inventory rating13.7 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans4
Design loadUnknown
Structure length57 ft (17.3 m)
Longest span15 ft (4.6 m)
Deck width20 ft (6.1 m)
Roadway width19 ft (5.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2024)
Projected traffic347 by 2045
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Whitfield Road over Manning Creek built?

It was built in 1990, making it 35 years old in 2025.

What condition is Whitfield Road over Manning Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in December 2023.

How much traffic does Whitfield Road over Manning Creek carry?

About 200 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is Whitfield Road over Manning Creek?

The structure is 57 ft (17.3 m) long with a longest span of 15 ft (4.6 m) and a deck 20 ft wide.

Who owns Whitfield Road over Manning Creek?

It is owned by the County Highway Agency.