US Bridges

Csah 9 over Spring Branch Creek

Fair

Watonwan County, Minnesota · 0.6 MI S of JCT Csah 26 · Structure no. 90330

Built
1920
105 years old
Condition
Fair
inspected November 2023
Type
Culvert
Concrete
Length
33 ft
3 main spans
Daily traffic
315
2016 count
Owner
County
County Highway Agency

About this bridge

Csah 9 over Spring Branch Creek is a concrete culvert carrying Csah 9 over Spring Branch Creek in Watonwan County, Minnesota. It was built in 1920, so it is 105 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 315 vehicles a day, projected to reach 315 by 2035. The structure is 33 ft (10.1 m) long and 25 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesCsah 9
CrossesSpring Branch Creek
Location0.6 MI S of JCT Csah 26
RouteCounty Highway 9
CountyWatonwan County
StateMinnesota
Coordinates43.97096, -94.36905
Functional classRural Minor Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.7 US tons
Inventory rating28 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadUnknown
Structure length33 ft (10.1 m)
Longest span10 ft (3 m)
Deck width25 ft (7.5 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic315 (2016)
Projected traffic315 by 2035
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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$115 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Csah 9 over Spring Branch Creek built?

It was built in 1920, making it 105 years old in 2025.

What condition is Csah 9 over Spring Branch Creek 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 November 2023.

How much traffic does Csah 9 over Spring Branch Creek carry?

About 315 vehicles per day (2016 count).

How long is Csah 9 over Spring Branch Creek?

The structure is 33 ft (10.1 m) long with a longest span of 10 ft (3 m) and a deck 25 ft wide.

Who owns Csah 9 over Spring Branch Creek?

It is owned by the County Highway Agency.