US Bridges

SR397 over Toms Bayou

Fair

Okaloosa County, Florida · 0.6MI. South of SR190 · Structure no. 570019

Built
1954
71 years old, rebuilt 2021
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
684 ft
19 main spans
Daily traffic
7,650
2022 count
Owner
State
State Highway Agency

About this bridge

SR397 over Toms Bayou is a prestressed concrete stringer/multi-beam or girder carrying SR397 over Toms Bayou in Okaloosa County, Florida. It was built in 1954 and reconstructed in 2021, so it is 71 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 7,650 vehicles a day, roughly 4% of them trucks, projected to reach 13,273 by 2044. The structure is 684 ft (208.5 m) long and 51 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesSR397
CrossesToms Bayou
Location0.6MI. South of SR190
RouteState Highway 397
CountyOkaloosa County
StateFlorida
Coordinates30.50315, -86.49408
Functional classUrban Other Principal 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.7 US tons
Inventory rating38.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans19
Design loadHL 93
Structure length684 ft (208.5 m)
Longest span36 ft (11 m)
Deck width51 ft (15.6 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,650 (2022)
Projected traffic13,273 by 2044
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkSTRAHNET connector

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 SR397 over Toms Bayou built?

It was built in 1954, making it 71 years old in 2025. It was reconstructed in 2021.

What condition is SR397 over Toms Bayou 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 April 2023.

How much traffic does SR397 over Toms Bayou carry?

About 7,650 vehicles per day (2022 count), of which roughly 4% are trucks.

How long is SR397 over Toms Bayou?

The structure is 684 ft (208.5 m) long with a longest span of 36 ft (11 m) and a deck 51 ft wide.

Who owns SR397 over Toms Bayou?

It is owned by the State Highway Agency.