US Bridges

Mussel White Road over Mills Creek

FairPosted for load

Nassau County, Florida · 3.7 MI Northeast of US 1 · Structure no. 744007

Built
1931
94 years old, rebuilt 1962
Condition
Fair
inspected June 2024
Type
Slab
Concrete
Length
100 ft
5 main spans
Daily traffic
1,600
2024 count
Owner
County
County Highway Agency

About this bridge

Mussel White Road over Mills Creek is a concrete slab carrying Mussel White Road over Mills Creek in Nassau County, Florida. It was built in 1931 and reconstructed in 1962, so it is 94 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. Its operating status is: posted for load restriction.

It carries about 1,600 vehicles a day, roughly 5% of them trucks, projected to reach 2,776 by 2046. The structure is 100 ft (30.5 m) long and 26 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

CarriesMussel White Road
CrossesMills Creek
Location3.7 MI Northeast of US 1
RouteCounty Highway 0
StateFlorida
Coordinates30.63115, -81.79379
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating18.4 US tons
Inventory rating14 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans5
Design loadUnknown
Structure length100 ft (30.5 m)
Longest span20 ft (6.1 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,600 (2024)
Projected traffic2,776 by 2046
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$150,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Mussel White Road over Mills Creek built?

It was built in 1931, making it 94 years old in 2025. It was reconstructed in 1962.

What condition is Mussel White Road over Mills 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 June 2024.

How much traffic does Mussel White Road over Mills Creek carry?

About 1,600 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is Mussel White Road over Mills Creek?

The structure is 100 ft (30.5 m) long with a longest span of 20 ft (6.1 m) and a deck 26 ft wide.

Who owns Mussel White Road over Mills Creek?

It is owned by the County Highway Agency.