US Bridges

Csah 20 over Sulliivan Creek

Good

Houston County, Minnesota · 0.5 MI S JCT Mn 44 · Structure no. 28539

Built
2007
18 years old
Condition
Good
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
77 ft
1 main span
Daily traffic
162
2021 count
Owner
County
County Highway Agency

About this bridge

Csah 20 over Sulliivan Creek is a prestressed concrete stringer/multi-beam or girder carrying Csah 20 over Sulliivan Creek in Houston County, Minnesota. It was built in 2007, so it is 18 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 162 vehicles a day, projected to reach 230 by 2041. The structure is 77 ft (23.4 m) long and 35 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesCsah 20
CrossesSulliivan Creek
Location0.5 MI S JCT Mn 44
RouteCounty Highway 20
Coordinates43.72926, -91.38606
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 protection7 GoodSome minor problems.
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 geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69.4 US tons
Inventory rating47.2 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length77 ft (23.4 m)
Longest span72 ft (21.9 m)
Deck width35 ft (10.8 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic162 (2021)
Projected traffic230 by 2041
Trucks—
Lanes on structure2
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Csah 20 over Sulliivan Creek built?

It was built in 2007, making it 18 years old in 2025.

What condition is Csah 20 over Sulliivan 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 Sulliivan Creek carry?

About 162 vehicles per day (2021 count).

How long is Csah 20 over Sulliivan Creek?

The structure is 77 ft (23.4 m) long with a longest span of 72 ft (21.9 m) and a deck 35 ft wide.

Who owns Csah 20 over Sulliivan Creek?

It is owned by the County Highway Agency.