US Bridges

CR 58 over Rock River

Good

Rock County, Minnesota · 0.6 MI E of JCT TH 75 · Structure no. 67528

Built
1996
29 years old
Condition
Good
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
311 ft
4 main spans
Daily traffic
55
2010 count
Owner
County
County Highway Agency

About this bridge

CR 58 over Rock River is a prestressed concrete stringer/multi-beam or girder carrying CR 58 over Rock River in Rock County, Minnesota. It was built in 1996, so it is 29 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 55 vehicles a day, projected to reach 55 by 2039. The structure is 311 ft (94.7 m) long and 33 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesCR 58
CrossesRock River
Location0.6 MI E of JCT TH 75
RouteCounty Highway 58
Coordinates43.50027, -96.18491
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 geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating73.4 US tons
Inventory rating39.4 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length311 ft (94.7 m)
Longest span81 ft (24.8 m)
Deck width33 ft (10.1 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic55 (2010)
Projected traffic55 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 CR 58 over Rock River built?

It was built in 1996, making it 29 years old in 2025.

What condition is CR 58 over 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 October 2024.

How much traffic does CR 58 over Rock River carry?

About 55 vehicles per day (2010 count).

How long is CR 58 over Rock River?

The structure is 311 ft (94.7 m) long with a longest span of 81 ft (24.8 m) and a deck 33 ft wide.

Who owns CR 58 over Rock River?

It is owned by the County Highway Agency.