US Bridges

SR-115 over Mills Creek

Fair

Nassau County, Florida · 2.1 Mi. N. of Duval Co. · Structure no. 740060

Built
1949
76 years old, rebuilt 1981
Condition
Fair
inspected September 2024
Type
Culvert
Concrete
Length
21 ft
2 main spans
Daily traffic
10,700
2023 count
Owner
State
State Highway Agency

About this bridge

SR-115 over Mills Creek is a concrete culvert carrying SR-115 over Mills Creek in Nassau County, Florida. It was built in 1949 and reconstructed in 1981, so it is 76 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 10,700 vehicles a day, roughly 5% of them trucks, projected to reach 18,564 by 2045. The structure is 21 ft (6.3 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesSR-115
CrossesMills Creek
Location2.1 Mi. N. of Duval Co.
RouteState Highway 115
CountyNassau County
StateFlorida
Coordinates30.54576, -81.78037
Functional classUrban 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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.1 US tons
Inventory rating35.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadH 15
Structure length21 ft (6.3 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,700 (2023)
Projected traffic18,564 by 2045
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

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-115 over Mills Creek built?

It was built in 1949, making it 76 years old in 2025. It was reconstructed in 1981.

What condition is SR-115 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 September 2024.

How much traffic does SR-115 over Mills Creek carry?

About 10,700 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is SR-115 over Mills Creek?

The structure is 21 ft (6.3 m) long with a longest span of 10 ft (3 m).

Who owns SR-115 over Mills Creek?

It is owned by the State Highway Agency.