US Bridges

CR 55 over Trib to Rock River

Good

Rock County, Minnesota · 0.1 MI S of JCT Csah 15 · Structure no. 67K42

Built
2020
5 years old
Condition
Good
inspected September 2022
Type
Culvert
Concrete
Length
26 ft
2 main spans
Daily traffic
31
2022 count
Owner
County
County Highway Agency

About this bridge

CR 55 over Trib to Rock River is a concrete culvert carrying CR 55 over Trib to Rock River in Rock County, Minnesota. It was built in 2020, so it is 5 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 31 vehicles a day, projected to reach 49 by 2042. The structure is 26 ft (7.9 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesCR 55
CrossesTrib to Rock River
Location0.1 MI S of JCT Csah 15
RouteCounty Highway 55
CountyRock County
StateMinnesota
Coordinates43.5723, -96.13327
Functional classRural Local

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 inspectionSeptember 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable 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 length26 ft (7.9 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic31 (2022)
Projected traffic49 by 2042
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 statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was CR 55 over Trib to Rock River built?

It was built in 2020, making it 5 years old in 2025.

What condition is CR 55 over Trib to Rock River 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 September 2022.

How much traffic does CR 55 over Trib to Rock River carry?

About 31 vehicles per day (2022 count).

How long is CR 55 over Trib to Rock River?

The structure is 26 ft (7.9 m) long with a longest span of 12 ft (3.7 m).

Who owns CR 55 over Trib to Rock River?

It is owned by the County Highway Agency.