US Bridges

Mn 30 over Rye Creek

Fair

Blue Earth County, Minnesota · 6.0 MI E of Amboy · Structure no. 6796

Built
1953
72 years old
Condition
Fair
inspected June 2024
Type
Culvert
Concrete
Length
40 ft
3 main spans
Daily traffic
1,274
2021 count
Owner
State
State Highway Agency

About this bridge

Mn 30 over Rye Creek is a concrete culvert carrying Mn 30 over Rye Creek in Blue Earth County, Minnesota. It was built in 1953, so it is 72 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 1,274 vehicles a day, roughly 9% of them trucks, projected to reach 1,150 by 2041. The structure is 40 ft (12.2 m) long. If it were closed, the detour would be 6.8 mi (11 km).

CarriesMn 30
CrossesRye Creek
Location6.0 MI E of Amboy
RouteState Highway 30
Coordinates43.89667, -94.05842
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 inspectionJune 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 spans3
Design loadUnknown
Structure length40 ft (12.2 m)
Longest span15 ft (4.6 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,274 (2021)
Projected traffic1,150 by 2041
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 Rye Creek built?

It was built in 1953, making it 72 years old in 2025.

What condition is Mn 30 over Rye 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 June 2024.

How much traffic does Mn 30 over Rye Creek carry?

About 1,274 vehicles per day (2021 count), of which roughly 9% are trucks.

How long is Mn 30 over Rye Creek?

The structure is 40 ft (12.2 m) long with a longest span of 15 ft (4.6 m).

Who owns Mn 30 over Rye Creek?

It is owned by the State Highway Agency.