US Bridges

M 89 over Mid Fk Zumbro River

Fair

Olmsted County, Minnesota · 0.6 MI N of JCT TH 52 · Structure no. 448

Built
1918
107 years old, rebuilt 1986
Condition
Fair
inspected October 2024
Type
Arch - Deck
Concrete
Length
296 ft
1 main span
Daily traffic
2,350
2014 count
Owner
City
City or Municipal Highway Agency

About this bridge

M 89 over Mid Fk Zumbro River is a concrete arch - deck carrying M 89 over Mid Fk Zumbro River in Olmsted County, Minnesota. It was built in 1918 and reconstructed in 1986, so it is 107 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 2,350 vehicles a day, projected to reach 2,350 by 2039. The structure is 296 ft (90.2 m) long and 49 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesM 89
CrossesMid Fk Zumbro River
Location0.6 MI N of JCT TH 52
RouteCity Street 89
CountyOlmsted County
StateMinnesota
Coordinates44.16233, -92.53477
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating79.1 US tons
Inventory rating45 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadHS 20
Structure length296 ft (90.2 m)
Longest span208 ft (63.5 m)
Deck width49 ft (15 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,350 (2014)
Projected traffic2,350 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was M 89 over Mid Fk Zumbro River built?

It was built in 1918, making it 107 years old in 2025. It was reconstructed in 1986.

What condition is M 89 over Mid Fk Zumbro River 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 2024.

How much traffic does M 89 over Mid Fk Zumbro River carry?

About 2,350 vehicles per day (2014 count).

How long is M 89 over Mid Fk Zumbro River?

The structure is 296 ft (90.2 m) long with a longest span of 208 ft (63.5 m) and a deck 49 ft wide.

Who owns M 89 over Mid Fk Zumbro River?

It is owned by the City or Municipal Highway Agency.