US Bridges

Csah 4 over Watab River

Fair

Stearns County, Minnesota · 0.9 MI SE of JCT Csah 2 · Structure no. 93250

Built
1977
48 years old
Condition
Fair
inspected January 2024
Type
Culvert
Concrete
Length
49 ft
3 main spans
Daily traffic
4,600
2017 count
Owner
County
County Highway Agency

About this bridge

Csah 4 over Watab River is a concrete culvert carrying Csah 4 over Watab River in Stearns County, Minnesota. It was built in 1977, so it is 48 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 4,600 vehicles a day, projected to reach 4,600 by 2039. The structure is 49 ft (14.9 m) long. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesCsah 4
CrossesWatab River
Location0.9 MI SE of JCT Csah 2
RouteCounty Highway 4
CountyStearns County
StateMinnesota
Coordinates45.61735, -94.27167
Functional classRural Major Collector

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.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.4 US tons
Inventory rating39.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length49 ft (14.9 m)
Longest span13 ft (4.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,600 (2017)
Projected traffic4,600 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 4 over Watab River built?

It was built in 1977, making it 48 years old in 2025.

What condition is Csah 4 over Watab 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 January 2024.

How much traffic does Csah 4 over Watab River carry?

About 4,600 vehicles per day (2017 count).

How long is Csah 4 over Watab River?

The structure is 49 ft (14.9 m) long with a longest span of 13 ft (4.1 m).

Who owns Csah 4 over Watab River?

It is owned by the County Highway Agency.