US Bridges

Csah 3 over Mound Creek

FairPosted for load

Brown County, Minnesota · 0.5 MI N of JCT Csah 21 · Structure no. 92203

Built
1941
84 years old
Condition
Fair
inspected October 2023
Type
Channel Beam
Prestressed Concrete
Length
32 ft
1 main span
Daily traffic
127
2022 count
Owner
County
County Highway Agency

About this bridge

Csah 3 over Mound Creek is a prestressed concrete channel beam carrying Csah 3 over Mound Creek in Brown County, Minnesota. It was built in 1941, so it is 84 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. Its operating status is: posted for load restriction.

It carries about 127 vehicles a day, projected to reach 160 by 2042. The structure is 32 ft (9.8 m) long and 32 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesCsah 3
CrossesMound Creek
Location0.5 MI N of JCT Csah 21
RouteCounty Highway 3
CountyBrown County
StateMinnesota
Coordinates44.17312, -95.00015
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating41.6 US tons
Inventory rating24.8 US tons

Structure

Structure typeChannel Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length32 ft (9.8 m)
Longest span30 ft (9.1 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic127 (2022)
Projected traffic160 by 2042
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 3 over Mound Creek built?

It was built in 1941, making it 84 years old in 2025.

What condition is Csah 3 over Mound 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 October 2023.

How much traffic does Csah 3 over Mound Creek carry?

About 127 vehicles per day (2022 count).

How long is Csah 3 over Mound Creek?

The structure is 32 ft (9.8 m) long with a longest span of 30 ft (9.1 m) and a deck 32 ft wide.

Who owns Csah 3 over Mound Creek?

It is owned by the County Highway Agency.