US Bridges

CR 18 over Bluff Creek

Fair

Union County, Florida · 1.8 Mi. W. of SR 121 · Structure no. 390018

Built
1955
70 years old
Condition
Fair
inspected April 2023
Type
Culvert
Concrete
Length
31 ft
3 main spans
Daily traffic
2,700
2023 count
Owner
County
County Highway Agency

About this bridge

CR 18 over Bluff Creek is a concrete culvert carrying CR 18 over Bluff 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 2,700 vehicles a day, roughly 8% of them trucks, projected to reach 4,685 by 2042. The structure is 31 ft (9.6 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesCR 18
CrossesBluff Creek
Location1.8 Mi. W. of SR 121
RouteCounty Highway 18
CountyUnion County
StateFlorida
Coordinates29.94594, -82.455
Functional classRural Major Collector

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.8 US tons
Inventory rating32.3 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadUnknown
Structure length31 ft (9.6 m)
Longest span10 ft (3.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,700 (2023)
Projected traffic4,685 by 2042
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 CR 18 over Bluff Creek built?

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

What condition is CR 18 over Bluff 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 April 2023.

How much traffic does CR 18 over Bluff Creek carry?

About 2,700 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is CR 18 over Bluff Creek?

The structure is 31 ft (9.6 m) long with a longest span of 10 ft (3.1 m).

Who owns CR 18 over Bluff Creek?

It is owned by the County Highway Agency.