US Bridges

Mn 30 over Straight River (jd # 2)

Fair

Steele County, Minnesota · 0.7 MI E of JCT TH 35 · Structure no. 5888

Built
1939
86 years old
Condition
Fair
inspected July 2023
Type
Culvert
Concrete
Length
33 ft
3 main spans
Daily traffic
1,741
2022 count
Owner
State
State Highway Agency

About this bridge

Mn 30 over Straight River (jd # 2) is a concrete culvert carrying Mn 30 over Straight River (jd # 2) in Steele County, Minnesota. It was built in 1939, so it is 86 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 5 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 1,741 vehicles a day, roughly 13% of them trucks, projected to reach 2,500 by 2042. The structure is 33 ft (10.1 m) long. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesMn 30
CrossesStraight River (jd # 2)
Location0.7 MI E of JCT TH 35
RouteState Highway 30
CountySteele County
StateMinnesota
Coordinates43.87004, -93.26218
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 protection7 GoodSome minor problems.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43.2 US tons
Inventory rating28.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadH 15
Structure length33 ft (10.1 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,741 (2022)
Projected traffic2,500 by 2042
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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$51 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Mn 30 over Straight River (jd # 2) built?

It was built in 1939, making it 86 years old in 2025.

What condition is Mn 30 over Straight River (jd # 2) 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 July 2023.

How much traffic does Mn 30 over Straight River (jd # 2) carry?

About 1,741 vehicles per day (2022 count), of which roughly 13% are trucks.

How long is Mn 30 over Straight River (jd # 2)?

The structure is 33 ft (10.1 m) long with a longest span of 10 ft (3 m).

Who owns Mn 30 over Straight River (jd # 2)?

It is owned by the State Highway Agency.