US Bridges

CR 121 over Brandy Branch

Good

Nassau County, Florida · 3.3 MI South of CR 119 · Structure no. 744312

Built
2001
24 years old
Condition
Good
inspected June 2024
Type
Slab
Concrete Continuous
Length
295 ft
9 main spans
Daily traffic
3,100
2024 count
Owner
County
County Highway Agency

About this bridge

CR 121 over Brandy Branch is a concrete continuous slab carrying CR 121 over Brandy Branch in Nassau County, Florida. It was built in 2001, so it is 24 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 3,100 vehicles a day, roughly 5% of them trucks, projected to reach 5,379 by 2046. The structure is 295 ft (90 m) long and 43 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesCR 121
CrossesBrandy Branch
Location3.3 MI South of CR 119
RouteCounty Highway 121
CountyNassau County
StateFlorida
Coordinates30.36844, -82.01539
Functional classRural Major Collector

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating97.1 US tons
Inventory rating58.2 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans9
Design loadHS 25 or greater
Structure length295 ft (90 m)
Longest span33 ft (10.1 m)
Deck width43 ft (13 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,100 (2024)
Projected traffic5,379 by 2046
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 121 over Brandy Branch built?

It was built in 2001, making it 24 years old in 2025.

What condition is CR 121 over Brandy Branch 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 June 2024.

How much traffic does CR 121 over Brandy Branch carry?

About 3,100 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is CR 121 over Brandy Branch?

The structure is 295 ft (90 m) long with a longest span of 33 ft (10.1 m) and a deck 43 ft wide.

Who owns CR 121 over Brandy Branch?

It is owned by the County Highway Agency.