US Bridges

Csah 11 over Clearwater River

Fair

Clearwater County, Minnesota · 1.3 MI W of JCT Csah 15 · Structure no. 15504

Built
1963
62 years old
Condition
Fair
inspected October 2023
Type
Channel Beam
Prestressed Concrete
Length
64 ft
3 main spans
Daily traffic
80
2015 count
Owner
County
County Highway Agency

About this bridge

Csah 11 over Clearwater River is a prestressed concrete channel beam carrying Csah 11 over Clearwater River in Clearwater County, Minnesota. It was built in 1963, so it is 62 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 6 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 80 vehicles a day, projected to reach 80 by 2039. The structure is 64 ft (19.4 m) long and 31 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesCsah 11
CrossesClearwater River
Location1.3 MI W of JCT Csah 15
RouteCounty Highway 11
CountyClearwater County
StateMinnesota
Coordinates47.77495, -95.35171
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
Deck8 Very GoodNo problems noted.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.8 US tons
Inventory rating37.1 US tons

Structure

Structure typeChannel Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length64 ft (19.4 m)
Longest span25 ft (7.6 m)
Deck width31 ft (9.5 m)
Roadway width30 ft (9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic80 (2015)
Projected traffic80 by 2039
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Csah 11 over Clearwater River built?

It was built in 1963, making it 62 years old in 2025.

What condition is Csah 11 over Clearwater 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 2023.

How much traffic does Csah 11 over Clearwater River carry?

About 80 vehicles per day (2015 count).

How long is Csah 11 over Clearwater River?

The structure is 64 ft (19.4 m) long with a longest span of 25 ft (7.6 m) and a deck 31 ft wide.

Who owns Csah 11 over Clearwater River?

It is owned by the County Highway Agency.