US Bridges

SR-100 over Swift Creek

Fair

Union County, Florida · 0.2 Mi. East of CR-231A · Structure no. 390004

Built
1955
70 years old
Condition
Fair
inspected March 2024
Type
Slab
Concrete
Length
200 ft
10 main spans
Daily traffic
3,400
2022 count
Owner
State
State Highway Agency

About this bridge

SR-100 over Swift Creek is a concrete slab carrying SR-100 over Swift Creek in Union County, Florida. It was built in 1955, so it is 70 years old, older 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 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 3,400 vehicles a day, roughly 13% of them trucks, projected to reach 5,899 by 2044. The structure is 200 ft (61 m) long and 34 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

Location

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CarriesSR-100
CrossesSwift Creek
Location0.2 Mi. East of CR-231A
RouteState Highway 100
CountyUnion County
StateFlorida
Coordinates30.05798, -82.41915
Functional classRural Minor Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating34.5 US tons
Inventory rating26.6 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans10
Design loadH 20
Structure length200 ft (61 m)
Longest span20 ft (6.1 m)
Deck width34 ft (10.4 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,400 (2022)
Projected traffic5,899 by 2044
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.2 mi (18 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 SR-100 over Swift Creek built?

It was built in 1955, making it 70 years old in 2025.

What condition is SR-100 over Swift 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 March 2024.

How much traffic does SR-100 over Swift Creek carry?

About 3,400 vehicles per day (2022 count), of which roughly 13% are trucks.

How long is SR-100 over Swift Creek?

The structure is 200 ft (61 m) long with a longest span of 20 ft (6.1 m) and a deck 34 ft wide.

Who owns SR-100 over Swift Creek?

It is owned by the State Highway Agency.