US Bridges

SR-121 over Dekles Mill Creek

Fair

Union County, Florida · 3.6 Mi. S. of CR-231 · Structure no. 390011

Built
1970
55 years old
Condition
Fair
inspected August 2024
Type
Culvert
Concrete
Length
22 ft
3 main spans
Daily traffic
6,100
2023 count
Owner
State
State Highway Agency

About this bridge

SR-121 over Dekles Mill Creek is a concrete culvert carrying SR-121 over Dekles Mill Creek in Union County, Florida. It was built in 1970, so it is 55 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 6,100 vehicles a day, roughly 18% of them trucks, projected to reach 10,584 by 2045. The structure is 22 ft (6.7 m) long. If it were closed, the detour would be 16.8 mi (27 km).

Location

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CarriesSR-121
CrossesDekles Mill Creek
Location3.6 Mi. S. of CR-231
RouteState Highway 121
CountyUnion County
StateFlorida
Coordinates29.98528, -82.38889
Functional classUrban 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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.9 US tons
Inventory rating34.2 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20 + Mod
Structure length22 ft (6.7 m)
Longest span7 ft (2.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,100 (2023)
Projected traffic10,584 by 2045
Trucks18%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.8 mi (27 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-121 over Dekles Mill Creek built?

It was built in 1970, making it 55 years old in 2025.

What condition is SR-121 over Dekles Mill 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 August 2024.

How much traffic does SR-121 over Dekles Mill Creek carry?

About 6,100 vehicles per day (2023 count), of which roughly 18% are trucks.

How long is SR-121 over Dekles Mill Creek?

The structure is 22 ft (6.7 m) long with a longest span of 7 ft (2.1 m).

Who owns SR-121 over Dekles Mill Creek?

It is owned by the State Highway Agency.