US Bridges

Mn 16 over Ferndale Brook

Fair

Houston County, Minnesota · 3.0 MI E of S JCT TH 43 · Structure no. 8860

Built
1955
70 years old
Condition
Fair
inspected August 2024
Type
Culvert
Concrete
Length
34 ft
2 main spans
Daily traffic
1,434
2022 count
Owner
State
State Highway Agency

About this bridge

Mn 16 over Ferndale Brook is a concrete culvert carrying Mn 16 over Ferndale Brook in Houston County, Minnesota. It was built in 1955, so it is 70 years old, older than the Minnesota average of 38.5 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 1,434 vehicles a day, roughly 7% of them trucks, projected to reach 1,750 by 2042. The structure is 34 ft (10.4 m) long. If it were closed, the detour would be 29.8 mi (48 km).

Location

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CarriesMn 16
CrossesFerndale Brook
Location3.0 MI E of S JCT TH 43
RouteState Highway 16
CountyHouston County
StateMinnesota
Coordinates43.78695, -91.70055
Functional classRural 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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 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 rating43.2 US tons
Inventory rating32.4 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadH 20
Structure length34 ft (10.4 m)
Longest span16 ft (4.9 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,434 (2022)
Projected traffic1,750 by 2042
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed29.8 mi (48 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 Mn 16 over Ferndale Brook built?

It was built in 1955, making it 70 years old in 2025.

What condition is Mn 16 over Ferndale Brook 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 August 2024.

How much traffic does Mn 16 over Ferndale Brook carry?

About 1,434 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is Mn 16 over Ferndale Brook?

The structure is 34 ft (10.4 m) long with a longest span of 16 ft (4.9 m).

Who owns Mn 16 over Ferndale Brook?

It is owned by the State Highway Agency.