US Bridges

Csah 13 over Midway River

Fair

St. Louis County, Minnesota · 0.7 MI N of JCT CSAH11 · Structure no. 90657

Built
1964
61 years old
Condition
Fair
inspected July 2024
Type
Culvert
Concrete
Length
37 ft
2 main spans
Daily traffic
6,900
2019 count
Owner
County
County Highway Agency

About this bridge

Csah 13 over Midway River is a concrete culvert carrying Csah 13 over Midway River in St. Louis 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 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 6,900 vehicles a day, projected to reach 7,200 by 2039. The structure is 37 ft (11.3 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesCsah 13
CrossesMidway River
Location0.7 MI N of JCT CSAH11
RouteCounty Highway 13
CountySt. Louis County
StateMinnesota
Coordinates46.75968, -92.28009
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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 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
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating54.2 US tons
Inventory rating41.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadUnknown
Structure length37 ft (11.3 m)
Longest span18 ft (5.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,900 (2019)
Projected traffic7,200 by 2039
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 13 over Midway River built?

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

What condition is Csah 13 over Midway 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 July 2024.

How much traffic does Csah 13 over Midway River carry?

About 6,900 vehicles per day (2019 count).

How long is Csah 13 over Midway River?

The structure is 37 ft (11.3 m) long with a longest span of 18 ft (5.4 m).

Who owns Csah 13 over Midway River?

It is owned by the County Highway Agency.