US Bridges

SR-200 & A1A over Mills Creek

Good

Nassau County, Florida · 0.9 Mi. E. of US-1 · Structure no. 740125

Built
2011
14 years old
Condition
Good
inspected September 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
286 ft
3 main spans
Daily traffic
12,900
2022 count
Owner
State
State Highway Agency

About this bridge

SR-200 & A1A over Mills Creek is a prestressed concrete stringer/multi-beam or girder carrying SR-200 & A1A over Mills Creek in Nassau County, Florida. It was built in 2011, so it is 14 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 12,900 vehicles a day, roughly 8% of them trucks, projected to reach 22,382 by 2042. The structure is 286 ft (87.2 m) long and 98 ft wide. If it were closed, the detour would be 24.2 mi (39 km).

Location

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CarriesSR-200 & A1A
CrossesMills Creek
Location0.9 Mi. E. of US-1
RouteState Highway 200
CountyNassau County
StateFlorida
Coordinates30.57486, -81.82026
Functional classUrban Other Principal Arterial

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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2023
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 geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41.4 US tons
Inventory rating36.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length286 ft (87.2 m)
Longest span95 ft (29 m)
Deck width98 ft (29.9 m)
Roadway width81 ft (24.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,900 (2022)
Projected traffic22,382 by 2042
Trucks8%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed24.2 mi (39 km)
TollOn a free road
National Highway SystemYes

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-200 & A1A over Mills Creek built?

It was built in 2011, making it 14 years old in 2025.

What condition is SR-200 & A1A over Mills Creek 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 September 2023.

How much traffic does SR-200 & A1A over Mills Creek carry?

About 12,900 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is SR-200 & A1A over Mills Creek?

The structure is 286 ft (87.2 m) long with a longest span of 95 ft (29 m) and a deck 98 ft wide.

Who owns SR-200 & A1A over Mills Creek?

It is owned by the State Highway Agency.