US Bridges

CR-484 over Rainbow River

Fair

Marion County, Florida · 0.8 Mile East of US-41 · Structure no. 364009

Built
1927
98 years old, rebuilt 1968
Condition
Fair
inspected February 2024
Type
Tee Beam
Concrete
Length
150 ft
5 main spans
Daily traffic
11,300
2022 count
Owner
County
County Highway Agency

About this bridge

CR-484 over Rainbow River is a concrete tee beam carrying CR-484 over Rainbow River in Marion County, Florida. It was built in 1927 and reconstructed in 1968, so it is 98 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 11,300 vehicles a day, roughly 7% of them trucks, projected to reach 19,606 by 2042. The structure is 150 ft (45.7 m) long and 46 ft wide. If it were closed, the detour would be 16.2 mi (26 km).

Location

Open in Google Maps
CarriesCR-484
CrossesRainbow River
Location0.8 Mile East of US-41
RouteCounty Highway 484
CountyMarion County
StateFlorida
Coordinates29.04952, -82.44766
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 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 geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51 US tons
Inventory rating30.6 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length150 ft (45.7 m)
Longest span30 ft (9.1 m)
Deck width46 ft (14.1 m)
Roadway width44 ft (13.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,300 (2022)
Projected traffic19,606 by 2042
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.2 mi (26 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-484 over Rainbow River built?

It was built in 1927, making it 98 years old in 2025. It was reconstructed in 1968.

What condition is CR-484 over Rainbow River 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 February 2024.

How much traffic does CR-484 over Rainbow River carry?

About 11,300 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is CR-484 over Rainbow River?

The structure is 150 ft (45.7 m) long with a longest span of 30 ft (9.1 m) and a deck 46 ft wide.

Who owns CR-484 over Rainbow River?

It is owned by the County Highway Agency.