US Bridges

Csah 5 over Lost River

Fair

Red Lake County, Minnesota · 0.2 MI N of JCT TH 222 · Structure no. 63502

Built
1964
61 years old
Condition
Fair
inspected October 2023
Type
Channel Beam
Prestressed Concrete
Length
144 ft
5 main spans
Daily traffic
850
2020 count
Owner
County
County Highway Agency

About this bridge

Csah 5 over Lost River is a prestressed concrete channel beam carrying Csah 5 over Lost River in Red Lake County, Minnesota. It was built in 1964, so it is 61 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 850 vehicles a day, roughly 14% of them trucks, projected to reach 1,050 by 2040. The structure is 144 ft (43.8 m) long and 32 ft wide. If it were closed, the detour would be 18 mi (29 km).

Location

Open in Google Maps
CarriesCsah 5
CrossesLost River
Location0.2 MI N of JCT TH 222
RouteCounty Highway 5
CountyRed Lake County
StateMinnesota
Coordinates47.84399, -95.85852
Functional classRural 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
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 rating40 US tons
Inventory rating31.1 US tons

Structure

Structure typeChannel Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans5
Design loadH 20
Structure length144 ft (43.8 m)
Longest span31 ft (9.4 m)
Deck width32 ft (9.7 m)
Roadway width29 ft (8.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic850 (2020)
Projected traffic1,050 by 2040
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed18 mi (29 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 5 over Lost River built?

It was built in 1964, making it 61 years old in 2025.

What condition is Csah 5 over Lost 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 5 over Lost River carry?

About 850 vehicles per day (2020 count), of which roughly 14% are trucks.

How long is Csah 5 over Lost River?

The structure is 144 ft (43.8 m) long with a longest span of 31 ft (9.4 m) and a deck 32 ft wide.

Who owns Csah 5 over Lost River?

It is owned by the County Highway Agency.