US Bridges

SR77 over Alligator Creek

Good

Jackson County, Florida · 0.3MI. N.Of Wash Co. Line · Structure no. 530104

Built
1992
33 years old
Condition
Good
inspected August 2023
Type
Slab
Prestressed Concrete
Length
400 ft
11 main spans
Daily traffic
3,400
2022 count
Owner
State
State Highway Agency

About this bridge

SR77 over Alligator Creek is a prestressed concrete slab carrying SR77 over Alligator Creek in Jackson County, Florida. It was built in 1992, so it is 33 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 3,400 vehicles a day, roughly 11% of them trucks, projected to reach 5,899 by 2044. The structure is 400 ft (121.9 m) long and 47 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesSR77
CrossesAlligator Creek
Location0.3MI. N.Of Wash Co. Line
RouteState Highway 77
CountyJackson County
StateFlorida
Coordinates30.83449, -85.53296
Functional classRural Principal Arterial - Other

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 inspectionAugust 2023
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 geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67 US tons
Inventory rating50 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans11
Design loadHS 20
Structure length400 ft (121.9 m)
Longest span36 ft (11.1 m)
Deck width47 ft (14.3 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,400 (2022)
Projected traffic5,899 by 2044
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemYes

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 SR77 over Alligator Creek built?

It was built in 1992, making it 33 years old in 2025.

What condition is SR77 over Alligator 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 August 2023.

How much traffic does SR77 over Alligator Creek carry?

About 3,400 vehicles per day (2022 count), of which roughly 11% are trucks.

How long is SR77 over Alligator Creek?

The structure is 400 ft (121.9 m) long with a longest span of 36 ft (11.1 m) and a deck 47 ft wide.

Who owns SR77 over Alligator Creek?

It is owned by the State Highway Agency.