US Bridges

Csah 4 over Unnamed Stream

Good

Olmsted County, Minnesota · 75 Ft E of JCT Csah 5 · Structure no. 55K17

Built
2021
4 years old
Condition
Good
inspected November 2023
Type
Culvert
Concrete
Length
34 ft
2 main spans
Daily traffic
2,500
2018 count
Owner
County
County Highway Agency

About this bridge

Csah 4 over Unnamed Stream is a concrete culvert carrying Csah 4 over Unnamed Stream in Olmsted County, Minnesota. It was built in 2021, so it is 4 years old, younger 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,500 vehicles a day, projected to reach 4,320 by 2041. The structure is 34 ft (10.4 m) long. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesCsah 4
CrossesUnnamed Stream
Location75 Ft E of JCT Csah 5
RouteCounty Highway 4
CountyOlmsted County
StateMinnesota
Coordinates44.0687, -92.64868
Functional classRural Major Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHL 93
Structure length34 ft (10.4 m)
Longest span16 ft (4.9 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,500 (2018)
Projected traffic4,320 by 2041
Trucks—
Lanes on structure3
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 statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Csah 4 over Unnamed Stream built?

It was built in 2021, making it 4 years old in 2025.

What condition is Csah 4 over Unnamed Stream 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 November 2023.

How much traffic does Csah 4 over Unnamed Stream carry?

About 2,500 vehicles per day (2018 count).

How long is Csah 4 over Unnamed Stream?

The structure is 34 ft (10.4 m) long with a longest span of 16 ft (4.9 m).

Who owns Csah 4 over Unnamed Stream?

It is owned by the County Highway Agency.