US Bridges

Mn 270 over BNSF RR

Fair

Rock County, Minnesota · In Hills · Structure no. 67001

Built
1967
58 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
157 ft
3 main spans
Daily traffic
1,403
2022 count
Owner
State
State Highway Agency

About this bridge

Mn 270 over BNSF RR is a steel continuous stringer/multi-beam or girder carrying Mn 270 over BNSF RR in Rock County, Minnesota. It was built in 1967, so it is 58 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 1,403 vehicles a day, roughly 9% of them trucks, projected to reach 1,400 by 2042. The structure is 157 ft (47.8 m) long and 38 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesMn 270
CrossesBNSF RR
LocationIn Hills
RouteState Highway 270
CountyRock County
StateMinnesota
Coordinates43.52931, -96.36552
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating59.9 US tons
Inventory rating35.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length157 ft (47.8 m)
Longest span60 ft (18.4 m)
Deck width38 ft (11.5 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,403 (2022)
Projected traffic1,400 by 2042
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
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$540 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Mn 270 over BNSF RR built?

It was built in 1967, making it 58 years old in 2025.

What condition is Mn 270 over BNSF RR 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 May 2024.

How much traffic does Mn 270 over BNSF RR carry?

About 1,403 vehicles per day (2022 count), of which roughly 9% are trucks.

How long is Mn 270 over BNSF RR?

The structure is 157 ft (47.8 m) long with a longest span of 60 ft (18.4 m) and a deck 38 ft wide.

Who owns Mn 270 over BNSF RR?

It is owned by the State Highway Agency.