US Bridges

Range Road 447 over Nine Mile Tributary

Good

Okaloosa County, Florida · 2.2 Miles North of Eglin · Structure no. AFFLFTFA12261

Built
2014
11 years old
Condition
Good
inspected January 2024
Type
Channel Beam
Concrete
Length
24 ft
1 main span
Daily traffic
20
2024 count
Owner
Federal
Air Force

About this bridge

Range Road 447 over Nine Mile Tributary is a concrete channel beam carrying Range Road 447 over Nine Mile Tributary in Okaloosa County, Florida. It was built in 2014, so it is 11 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 20 vehicles a day, projected to reach 24 by 2044. The structure is 24 ft (7.3 m) long and 20 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

Location

Open in Google Maps
CarriesRange Road 447
CrossesNine Mile Tributary
Location2.2 Miles North of Eglin
RouteFederal Lands Road 447
CountyOkaloosa County
StateFlorida
Coordinates30.58611, -86.45961
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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating75.9 US tons
Inventory rating45 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length24 ft (7.3 m)
Longest span19 ft (5.9 m)
Deck width20 ft (6.2 m)
Roadway width17 ft (5.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2024)
Projected traffic24 by 2044
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.2 mi (18 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerAir Force
Maintained byAir Force
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 Range Road 447 over Nine Mile Tributary built?

It was built in 2014, making it 11 years old in 2025.

What condition is Range Road 447 over Nine Mile Tributary 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 January 2024.

How much traffic does Range Road 447 over Nine Mile Tributary carry?

About 20 vehicles per day (2024 count).

How long is Range Road 447 over Nine Mile Tributary?

The structure is 24 ft (7.3 m) long with a longest span of 19 ft (5.9 m) and a deck 20 ft wide.

Who owns Range Road 447 over Nine Mile Tributary?

It is owned by the Air Force.