US Bridges

Old River Road over Mill Creek

Good

Okaloosa County, Florida · 0.05 MI S of Buckward RD · Structure no. 570015

Built
1957
68 years old
Condition
Good
inspected September 2023
Type
Culvert
Concrete
Length
31 ft
3 main spans
Daily traffic
1,800
2022 count
Owner
County
County Highway Agency

About this bridge

Old River Road over Mill Creek is a concrete culvert carrying Old River Road over Mill Creek in Okaloosa County, Florida. It was built in 1957, so it is 68 years old, older 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 1,800 vehicles a day, roughly 11% of them trucks, projected to reach 3,123 by 2042. The structure is 31 ft (9.6 m) long. If it were closed, the detour would be 8.1 mi (13 km).

CarriesOld River Road
CrossesMill Creek
Location0.05 MI S of Buckward RD
RouteCounty Highway 397
StateFlorida
Coordinates30.76636, -86.63578
Functional classRural Minor Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50 US tons
Inventory rating30 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length31 ft (9.6 m)
Longest span11 ft (3.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,800 (2022)
Projected traffic3,123 by 2042
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 Old River Road over Mill Creek built?

It was built in 1957, making it 68 years old in 2025.

What condition is Old River Road over Mill 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 September 2023.

How much traffic does Old River Road over Mill Creek carry?

About 1,800 vehicles per day (2022 count), of which roughly 11% are trucks.

How long is Old River Road over Mill Creek?

The structure is 31 ft (9.6 m) long with a longest span of 11 ft (3.3 m).

Who owns Old River Road over Mill Creek?

It is owned by the County Highway Agency.