US Bridges

Csah 9 over Mid Fk Whitewater River

Good

Olmsted County, Minnesota · 0.7 MI W of JCT Csah 7 · Structure no. 93389

Built
1978
47 years old
Condition
Good
inspected November 2023
Type
Culvert
Concrete
Length
39 ft
2 main spans
Daily traffic
850
2018 count
Owner
County
County Highway Agency

About this bridge

Csah 9 over Mid Fk Whitewater River is a concrete culvert carrying Csah 9 over Mid Fk Whitewater River in Olmsted County, Minnesota. It was built in 1978, so it is 47 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.

It carries about 850 vehicles a day, projected to reach 841 by 2038. The structure is 39 ft (11.8 m) long. If it were closed, the detour would be 19.3 mi (31 km).

CarriesCsah 9
CrossesMid Fk Whitewater River
Location0.7 MI W of JCT Csah 7
RouteCounty Highway 9
Coordinates44.02073, -92.20247
Functional classRural Major Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.4 US tons
Inventory rating39.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length39 ft (11.8 m)
Longest span16 ft (4.8 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic850 (2018)
Projected traffic841 by 2038
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.3 mi (31 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 Mid Fk Whitewater River built?

It was built in 1978, making it 47 years old in 2025.

What condition is Csah 9 over Mid Fk Whitewater 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 November 2023.

How much traffic does Csah 9 over Mid Fk Whitewater River carry?

About 850 vehicles per day (2018 count).

How long is Csah 9 over Mid Fk Whitewater River?

The structure is 39 ft (11.8 m) long with a longest span of 16 ft (4.8 m).

Who owns Csah 9 over Mid Fk Whitewater River?

It is owned by the County Highway Agency.