US Bridges

Steephead Road over Alligator Creek

FairPosted for load

Santa Rosa County, Florida · 0.6MI E of Deaton Bridge · Structure no. 584123

Built
1987
38 years old
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
24 ft
2 main spans
Daily traffic
50
2024 count
Owner
State
State Park, Forest, or Reservation Agency

About this bridge

Steephead Road over Alligator Creek is a wood or timber stringer/multi-beam or girder carrying Steephead Road over Alligator Creek in Santa Rosa County, Florida. It was built in 1987, so it is 38 years old, younger 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 50 vehicles a day, projected to reach 87 by 2046. The structure is 24 ft (7.3 m) long and 14 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesSteephead Road
CrossesAlligator Creek
Location0.6MI E of Deaton Bridge
RouteState Lands Road 0
CountySanta Rosa County
StateFlorida
Coordinates30.75758, -86.87464
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating27 US tons
Inventory rating21.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans2
Design loadHL 93
Structure length24 ft (7.3 m)
Longest span12 ft (3.8 m)
Deck width14 ft (4.2 m)
Roadway width13 ft (4.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2024)
Projected traffic87 by 2046
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Park, Forest, or Reservation Agency
Maintained byState Park, Forest, or Reservation 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 Steephead Road over Alligator Creek built?

It was built in 1987, making it 38 years old in 2025.

What condition is Steephead Road over Alligator Creek 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 June 2024.

How much traffic does Steephead Road over Alligator Creek carry?

About 50 vehicles per day (2024 count).

How long is Steephead Road over Alligator Creek?

The structure is 24 ft (7.3 m) long with a longest span of 12 ft (3.8 m) and a deck 14 ft wide.

Who owns Steephead Road over Alligator Creek?

It is owned by the State Park, Forest, or Reservation Agency.