US Bridges

Mn 30 over Br of Watonwan R

Good

Cottonwood County, Minnesota · 8.7 MI E of JCT TH 71 · Structure no. 17X01

Built
2010
15 years old
Condition
Good
inspected September 2022
Type
Culvert
Concrete
Length
33 ft
2 main spans
Daily traffic
1,227
2021 count
Owner
State
State Highway Agency

About this bridge

Mn 30 over Br of Watonwan R is a concrete culvert carrying Mn 30 over Br of Watonwan R in Cottonwood County, Minnesota. It was built in 2010, so it is 15 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 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 1,227 vehicles a day, roughly 24% of them trucks, projected to reach 720 by 2041. The structure is 33 ft (10.1 m) long. If it were closed, the detour would be 3.1 mi (5 km).

CarriesMn 30
CrossesBr of Watonwan R
Location8.7 MI E of JCT TH 71
RouteState Highway 30
Coordinates44.04988, -94.9452
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 protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionSeptember 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75.6 US tons
Inventory rating45 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 25 or greater
Structure length33 ft (10.1 m)
Longest span14 ft (4.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,227 (2021)
Projected traffic720 by 2041
Trucks24%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 30 over Br of Watonwan R built?

It was built in 2010, making it 15 years old in 2025.

What condition is Mn 30 over Br of Watonwan R 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 2022.

How much traffic does Mn 30 over Br of Watonwan R carry?

About 1,227 vehicles per day (2021 count), of which roughly 24% are trucks.

How long is Mn 30 over Br of Watonwan R?

The structure is 33 ft (10.1 m) long with a longest span of 14 ft (4.3 m).

Who owns Mn 30 over Br of Watonwan R?

It is owned by the State Highway Agency.