US Bridges

Csah 24 over Red Lake River

Good

Pennington County, Minnesota · 1.1 MI S of JCT Csah 6 · Structure no. 57502

Built
1969
56 years old
Condition
Good
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
195 ft
3 main spans
Daily traffic
600
2019 count
Owner
County
County Highway Agency

About this bridge

Csah 24 over Red Lake River is a steel continuous stringer/multi-beam or girder carrying Csah 24 over Red Lake River in Pennington County, Minnesota. It was built in 1969, so it is 56 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 600 vehicles a day, projected to reach 630 by 2039. The structure is 195 ft (59.3 m) long and 33 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesCsah 24
CrossesRed Lake River
Location1.1 MI S of JCT Csah 6
RouteCounty Highway 24
Coordinates48.04863, -95.80881
Functional classRural Minor Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
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 geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating34.6 US tons
Inventory rating20.7 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length195 ft (59.3 m)
Longest span73 ft (22.3 m)
Deck width33 ft (10.1 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic600 (2019)
Projected traffic630 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Csah 24 over Red Lake River built?

It was built in 1969, making it 56 years old in 2025.

What condition is Csah 24 over Red Lake 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 October 2024.

How much traffic does Csah 24 over Red Lake River carry?

About 600 vehicles per day (2019 count).

How long is Csah 24 over Red Lake River?

The structure is 195 ft (59.3 m) long with a longest span of 73 ft (22.3 m) and a deck 33 ft wide.

Who owns Csah 24 over Red Lake River?

It is owned by the County Highway Agency.