US Bridges

Csah 9 over W Br Rum River

GoodPosted for load

Benton County, Minnesota · 0.3 MI S of JCT CR 54 · Structure no. 05510

Built
1969
56 years old
Condition
Good
inspected September 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
63 ft
1 main span
Daily traffic
355
2019 count
Owner
County
County Highway Agency

About this bridge

Csah 9 over W Br Rum River is a prestressed concrete stringer/multi-beam or girder carrying Csah 9 over W Br Rum River in Benton County, Minnesota. It was built in 1969, so it is 56 years old, older 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. Its operating status is: posted for load restriction.

It carries about 355 vehicles a day, projected to reach 340 by 2039. The structure is 63 ft (19.1 m) long and 32 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesCsah 9
CrossesW Br Rum River
Location0.3 MI S of JCT CR 54
RouteCounty Highway 9
Coordinates45.77498, -93.78332
Functional classRural Minor Collector

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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusPosted for load 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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating21.4 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length63 ft (19.1 m)
Longest span57 ft (17.5 m)
Deck width32 ft (9.7 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic355 (2019)
Projected traffic340 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Csah 9 over W Br Rum River built?

It was built in 1969, making it 56 years old in 2025.

What condition is Csah 9 over W Br 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 2023.

How much traffic does Csah 9 over W Br Rum River carry?

About 355 vehicles per day (2019 count).

How long is Csah 9 over W Br Rum River?

The structure is 63 ft (19.1 m) long with a longest span of 57 ft (17.5 m) and a deck 32 ft wide.

Who owns Csah 9 over W Br Rum River?

It is owned by the County Highway Agency.