US Bridges

Csah 20 over Beaver Creek

Good

Rock County, Minnesota · 1.5 MI W of JCT Csah 11 · Structure no. 67552

Built
2005
20 years old
Condition
Good
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
75 ft
1 main span
Daily traffic
266
2022 count
Owner
County
County Highway Agency

About this bridge

Csah 20 over Beaver Creek is a prestressed concrete stringer/multi-beam or girder carrying Csah 20 over Beaver Creek in Rock County, Minnesota. It was built in 2005, so it is 20 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 266 vehicles a day, projected to reach 210 by 2042. The structure is 75 ft (23 m) long and 39 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

CarriesCsah 20
CrossesBeaver Creek
Location1.5 MI W of JCT Csah 11
RouteCounty Highway 20
Coordinates43.71831, -96.28194
Functional classRural Minor Collector

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 inspectionOctober 2024
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 geometry8: Equal to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating78.7 US tons
Inventory rating47.8 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length75 ft (23 m)
Longest span74 ft (22.5 m)
Deck width39 ft (12 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic266 (2022)
Projected traffic210 by 2042
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 20 over Beaver Creek built?

It was built in 2005, making it 20 years old in 2025.

What condition is Csah 20 over Beaver 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 October 2024.

How much traffic does Csah 20 over Beaver Creek carry?

About 266 vehicles per day (2022 count).

How long is Csah 20 over Beaver Creek?

The structure is 75 ft (23 m) long with a longest span of 74 ft (22.5 m) and a deck 39 ft wide.

Who owns Csah 20 over Beaver Creek?

It is owned by the County Highway Agency.