US Bridges

Csah 3 over Mississippi River

Fair

Crow Wing County, Minnesota · 2.0 MI N of Brainerd · Structure no. 6518

Built
1950
75 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
373 ft
3 main spans
Daily traffic
9,200
2019 count
Owner
County
County Highway Agency

About this bridge

Csah 3 over Mississippi River is a steel stringer/multi-beam or girder carrying Csah 3 over Mississippi River in Crow Wing County, Minnesota. It was built in 1950, so it is 75 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 9,200 vehicles a day, projected to reach 8,700 by 2039. The structure is 373 ft (113.8 m) long and 40 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesCsah 3
CrossesMississippi River
Location2.0 MI N of Brainerd
RouteCounty Highway 3
CountyCrow Wing County
StateMinnesota
Coordinates46.38315, -94.17634
Functional classUrban Minor Arterial

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
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 evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43.5 US tons
Inventory rating25.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length373 ft (113.8 m)
Longest span113 ft (34.3 m)
Deck width40 ft (12.2 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,200 (2019)
Projected traffic8,700 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed6.2 mi (10 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$1,000 million (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Csah 3 over Mississippi River built?

It was built in 1950, making it 75 years old in 2025.

What condition is Csah 3 over Mississippi 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 3 over Mississippi River carry?

About 9,200 vehicles per day (2019 count).

How long is Csah 3 over Mississippi River?

The structure is 373 ft (113.8 m) long with a longest span of 113 ft (34.3 m) and a deck 40 ft wide.

Who owns Csah 3 over Mississippi River?

It is owned by the County Highway Agency.