US Bridges

Csah 1 over Willow Creek

Good

Olmsted County, Minnesota · 0.2 MI S of JCT CR 146 · Structure no. 55576

Built
2004
21 years old
Condition
Good
inspected November 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
121 ft
3 main spans
Daily traffic
9,700
2018 count
Owner
County
County Highway Agency

About this bridge

Csah 1 over Willow Creek is a prestressed concrete stringer/multi-beam or girder carrying Csah 1 over Willow Creek in Olmsted County, Minnesota. It was built in 2004, so it is 21 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 9,700 vehicles a day, projected to reach 9,943 by 2038. The structure is 121 ft (36.8 m) long and 85 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesCsah 1
CrossesWillow Creek
Location0.2 MI S of JCT CR 146
RouteCounty Highway 1
CountyOlmsted County
StateMinnesota
Coordinates43.99041, -92.44222
Functional classUrban Minor Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating89.5 US tons
Inventory rating54.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length121 ft (36.8 m)
Longest span40 ft (12.3 m)
Deck width85 ft (26 m)
Roadway width64 ft (19.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,700 (2018)
Projected traffic9,943 by 2038
Trucks—
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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$1,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Csah 1 over Willow Creek built?

It was built in 2004, making it 21 years old in 2025.

What condition is Csah 1 over Willow Creek 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 1 over Willow Creek carry?

About 9,700 vehicles per day (2018 count).

How long is Csah 1 over Willow Creek?

The structure is 121 ft (36.8 m) long with a longest span of 40 ft (12.3 m) and a deck 85 ft wide.

Who owns Csah 1 over Willow Creek?

It is owned by the County Highway Agency.