US Bridges

SR281 over Indian Bayou

Good

Santa Rosa County, Florida · 0.7MI S. of I10 SR8 · Structure no. 580028

Built
1968
57 years old, rebuilt 1999
Condition
Good
inspected February 2025
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
184 ft
4 main spans
Daily traffic
8,400
2022 count
Owner
State
State Highway Agency

About this bridge

SR281 over Indian Bayou is a prestressed concrete stringer/multi-beam or girder carrying SR281 over Indian Bayou in Santa Rosa County, Florida. It was built in 1968 and reconstructed in 1999, so it is 57 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 8,400 vehicles a day, roughly 10% of them trucks, projected to reach 14,574 by 2044. The structure is 184 ft (56.1 m) long and 53 ft wide. If it were closed, the detour would be 16.8 mi (27 km).

CarriesSR281
CrossesIndian Bayou
Location0.7MI S. of I10 SR8
RouteState Highway 281
StateFlorida
Coordinates30.52421, -87.0873
Functional classRural Minor Arterial

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 protection8 Very GoodNo problems noted.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.3 US tons
Inventory rating37.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length184 ft (56.1 m)
Longest span46 ft (14 m)
Deck width53 ft (16.2 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,400 (2022)
Projected traffic14,574 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed16.8 mi (27 km)
TollOn a free road
National Highway SystemNo

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 SR281 over Indian Bayou built?

It was built in 1968, making it 57 years old in 2025. It was reconstructed in 1999.

What condition is SR281 over Indian Bayou 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 February 2025.

How much traffic does SR281 over Indian Bayou carry?

About 8,400 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is SR281 over Indian Bayou?

The structure is 184 ft (56.1 m) long with a longest span of 46 ft (14 m) and a deck 53 ft wide.

Who owns SR281 over Indian Bayou?

It is owned by the State Highway Agency.