US Bridges

Mn 4 over Cedar Run

Good

Martin County, Minnesota · 7.6 MI N of JCT I 90 · Structure no. 46X04

Built
2024
1 years old
Condition
Good
inspected November 2024
Type
Culvert
Concrete
Length
32 ft
2 main spans
Daily traffic
1,890
2022 count
Owner
State
State Highway Agency

About this bridge

Mn 4 over Cedar Run is a concrete culvert carrying Mn 4 over Cedar Run in Martin County, Minnesota. It was built in 2024, so it is 1 years old, younger than the Minnesota average of 38.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,890 vehicles a day, roughly 11% of them trucks, projected to reach 2,070 by 2042. The structure is 32 ft (9.9 m) long. If it were closed, the detour would be 26.7 mi (43 km).

Location

Open in Google Maps
CarriesMn 4
CrossesCedar Run
Location7.6 MI N of JCT I 90
RouteState Highway 4
CountyMartin County
StateMinnesota
Coordinates43.77273, -94.71474
Functional classRural Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHL 93
Structure length32 ft (9.9 m)
Longest span14 ft (4.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,890 (2022)
Projected traffic2,070 by 2042
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed26.7 mi (43 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Mn 4 over Cedar Run built?

It was built in 2024, making it 1 years old in 2025.

What condition is Mn 4 over Cedar Run 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 November 2024.

How much traffic does Mn 4 over Cedar Run carry?

About 1,890 vehicles per day (2022 count), of which roughly 11% are trucks.

How long is Mn 4 over Cedar Run?

The structure is 32 ft (9.9 m) long with a longest span of 14 ft (4.4 m).

Who owns Mn 4 over Cedar Run?

It is owned by the State Highway Agency.