US Bridges

I 90 over BNSF RR

Fair

Rock County, Minnesota · 0.3 MI E of S D ST Line · Structure no. 9686

Built
1960
65 years old, rebuilt 1982
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
119 ft
3 main spans
Daily traffic
7,555
2022 count
Owner
State
State Highway Agency

About this bridge

I 90 over BNSF RR is a steel continuous stringer/multi-beam or girder carrying I 90 over BNSF RR in Rock County, Minnesota. It was built in 1960 and reconstructed in 1982, so it is 65 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 7,555 vehicles a day, roughly 15% of them trucks, projected to reach 6,900 by 2042. The structure is 119 ft (36.4 m) long and 44 ft wide. If it were closed, the detour would be 29.8 mi (48 km).

Location

Open in Google Maps
CarriesI 90
CrossesBNSF RR
Location0.3 MI E of S D ST Line
RouteInterstate 90
CountyRock County
StateMinnesota
Coordinates43.6089, -96.44694
Functional classRural Principal Arterial - Interstate

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.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating78.8 US tons
Inventory rating47.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length119 ft (36.4 m)
Longest span40 ft (12.1 m)
Deck width44 ft (13.5 m)
Roadway width41 ft (12.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,555 (2022)
Projected traffic6,900 by 2042
Trucks15%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
Detour if closed29.8 mi (48 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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$403 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 90 over BNSF RR built?

It was built in 1960, making it 65 years old in 2025. It was reconstructed in 1982.

What condition is I 90 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 October 2023.

How much traffic does I 90 over BNSF RR carry?

About 7,555 vehicles per day (2022 count), of which roughly 15% are trucks.

How long is I 90 over BNSF RR?

The structure is 119 ft (36.4 m) long with a longest span of 40 ft (12.1 m) and a deck 44 ft wide.

Who owns I 90 over BNSF RR?

It is owned by the State Highway Agency.