US Bridges

SR-100 over Big Cypress Swamp

Good

Flagler County, Florida · SR-100-BIG Cypress Swamp · Structure no. 730067

Built
2002
23 years old
Condition
Good
inspected January 2024
Type
Slab
Concrete Continuous
Length
77 ft
3 main spans
Daily traffic
9,700
2022 count
Owner
State
State Highway Agency

About this bridge

SR-100 over Big Cypress Swamp is a concrete continuous slab carrying SR-100 over Big Cypress Swamp in Flagler County, Florida. It was built in 2002, so it is 23 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 9,700 vehicles a day, roughly 13% of them trucks, projected to reach 16,830 by 2044. The structure is 77 ft (23.5 m) long and 47 ft wide. If it were closed, the detour would be 4.3 mi (7 km).

Location

Open in Google Maps
CarriesSR-100
CrossesBig Cypress Swamp
LocationSR-100-BIG Cypress Swamp
RouteState Highway 100
CountyFlagler County
StateFlorida
Coordinates29.48126, -81.34524
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 protection8 Very GoodNo problems noted.
Last inspectionJanuary 2024
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating89.6 US tons
Inventory rating53.8 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length77 ft (23.5 m)
Longest span30 ft (9.1 m)
Deck width47 ft (14.2 m)
Roadway width43 ft (13.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,700 (2022)
Projected traffic16,830 by 2044
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed4.3 mi (7 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 SR-100 over Big Cypress Swamp built?

It was built in 2002, making it 23 years old in 2025.

What condition is SR-100 over Big Cypress Swamp 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 January 2024.

How much traffic does SR-100 over Big Cypress Swamp carry?

About 9,700 vehicles per day (2022 count), of which roughly 13% are trucks.

How long is SR-100 over Big Cypress Swamp?

The structure is 77 ft (23.5 m) long with a longest span of 30 ft (9.1 m) and a deck 47 ft wide.

Who owns SR-100 over Big Cypress Swamp?

It is owned by the State Highway Agency.