US Bridges

SR-16 over Mill Creek

Fair

St. Johns County, Florida · 3 Mi. E. of SR-13 · Structure no. 780063

Built
1971
54 years old, rebuilt 2010
Condition
Fair
inspected September 2023
Type
Culvert
Concrete
Length
32 ft
3 main spans
Daily traffic
22,000
2022 count
Owner
State
State Highway Agency

About this bridge

SR-16 over Mill Creek is a concrete culvert carrying SR-16 over Mill Creek in St. Johns County, Florida. It was built in 1971 and reconstructed in 2010, so it is 54 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 22,000 vehicles a day, roughly 4% of them trucks, projected to reach 38,170 by 2044. The structure is 32 ft (9.7 m) long. If it were closed, the detour would be 32.9 mi (53 km).

Location

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CarriesSR-16
CrossesMill Creek
Location3 Mi. E. of SR-13
RouteState Highway 16
CountySt. Johns County
StateFlorida
Coordinates29.96417, -81.49556
Functional classRural Principal Arterial - Other

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 2023
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 rating54.1 US tons
Inventory rating41.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadH 20
Structure length32 ft (9.7 m)
Longest span10 ft (2.9 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22,000 (2022)
Projected traffic38,170 by 2044
Trucks4%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed32.9 mi (53 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-16 over Mill Creek built?

It was built in 1971, making it 54 years old in 2025. It was reconstructed in 2010.

What condition is SR-16 over Mill 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 2023.

How much traffic does SR-16 over Mill Creek carry?

About 22,000 vehicles per day (2022 count), of which roughly 4% are trucks.

How long is SR-16 over Mill Creek?

The structure is 32 ft (9.7 m) long with a longest span of 10 ft (2.9 m).

Who owns SR-16 over Mill Creek?

It is owned by the State Highway Agency.