US Bridges

Csah 4 over S Br Water Hen Creek

Fair

St. Louis County, Minnesota · 0.6 MI S of JCT CR340 · Structure no. 3383

Built
1945
80 years old
Condition
Fair
inspected August 2024
Type
Culvert
Concrete
Length
26 ft
2 main spans
Daily traffic
760
2019 count
Owner
County
County Highway Agency

About this bridge

Csah 4 over S Br Water Hen Creek is a concrete culvert carrying Csah 4 over S Br Water Hen Creek in St. Louis County, Minnesota. It was built in 1945, so it is 80 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 760 vehicles a day, projected to reach 630 by 2039. The structure is 26 ft (8 m) long. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesCsah 4
CrossesS Br Water Hen Creek
Location0.6 MI S of JCT CR340
RouteCounty Highway 4
CountySt. Louis County
StateMinnesota
Coordinates47.33414, -92.24348
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 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 adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating45.7 US tons
Inventory rating27.4 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadUnknown
Structure length26 ft (8 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic760 (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$180 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Csah 4 over S Br Water Hen Creek built?

It was built in 1945, making it 80 years old in 2025.

What condition is Csah 4 over S Br Water Hen 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 August 2024.

How much traffic does Csah 4 over S Br Water Hen Creek carry?

About 760 vehicles per day (2019 count).

How long is Csah 4 over S Br Water Hen Creek?

The structure is 26 ft (8 m) long with a longest span of 12 ft (3.7 m).

Who owns Csah 4 over S Br Water Hen Creek?

It is owned by the County Highway Agency.