US Bridges

SR-100 over US-1

Good

Flagler County, Florida · SR-100 over US-1 · Structure no. 730068

Built
2002
23 years old
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
387 ft
3 main spans
Daily traffic
9,700
2022 count
Owner
State
State Highway Agency

About this bridge

SR-100 over US-1 is a prestressed concrete stringer/multi-beam or girder carrying SR-100 over US-1 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 387 ft (118.1 m) long and 46 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesSR-100
CrossesUS-1
LocationSR-100 over US-1
RouteState Highway 100
StateFlorida
Coordinates29.47215, -81.26679
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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating110.1 US tons
Inventory rating63.8 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length387 ft (118.1 m)
Longest span140 ft (42.7 m)
Deck width46 ft (14.1 m)
Roadway width43 ft (13.2 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
CrossesHighway and railroad
Detour if closed3.7 mi (6 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR-100 over US-1 built?

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

What condition is SR-100 over US-1 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 October 2023.

How much traffic does SR-100 over US-1 carry?

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

How long is SR-100 over US-1?

The structure is 387 ft (118.1 m) long with a longest span of 140 ft (42.7 m) and a deck 46 ft wide.

Who owns SR-100 over US-1?

It is owned by the State Highway Agency.