US Bridges

US 169 over Rum River

Good

Mille Lacs County, Minnesota · 4.2 MI S of S JCT TH 27 · Structure no. 48032

Built
1991
34 years old
Condition
Good
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
98 ft
1 main span
Daily traffic
4,958
2022 count
Owner
State
State Highway Agency

About this bridge

US 169 over Rum River is a prestressed concrete stringer/multi-beam or girder carrying US 169 over Rum River in Mille Lacs County, Minnesota. It was built in 1991, so it is 34 years old, younger than the Minnesota average of 38.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 4,958 vehicles a day, roughly 5% of them trucks, projected to reach 5,400 by 2042. The structure is 98 ft (30 m) long and 44 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesUS 169
CrossesRum River
Location4.2 MI S of S JCT TH 27
RouteU.S. Route 169
Coordinates46.01409, -93.66245
Functional classRural Principal Arterial - Other

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72 US tons
Inventory rating43.5 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length98 ft (30 m)
Longest span93 ft (28.2 m)
Deck width44 ft (13.4 m)
Roadway width41 ft (12.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,958 (2022)
Projected traffic5,400 by 2042
Trucks5%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemYes

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 US 169 over Rum River built?

It was built in 1991, making it 34 years old in 2025.

What condition is US 169 over Rum River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2024.

How much traffic does US 169 over Rum River carry?

About 4,958 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is US 169 over Rum River?

The structure is 98 ft (30 m) long with a longest span of 93 ft (28.2 m) and a deck 44 ft wide.

Who owns US 169 over Rum River?

It is owned by the State Highway Agency.