County Road 9 Bridge Over I-494

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Final Layout 
 Final Design Rockfork Road and I-494 Project

Project Overview
This project includes plans to replace the County Road 9 (Rockford Road) Bridge over Interstate 494 and improve the intersection. The project is a joint effort of the City of Plymouth, Hennepin County and Minnesota Department of Transportation.

Project funding has not yet been secured, but the City of Plymouth is working with some local lawmakers to advocate for state funding for a new bridge. To view more information about the city’s advocacy efforts, visit

Though the bridge is not city-owned infrastructure, the city is teaming up with Hennepin County and MnDOT to develop design options. This will allow the project to move ahead quickly, once funding is in place.

The existing interchange was built in 1965 without dedicated left turn lanes – and the area has seen considerable development over the past 53 years. As a result, this interchange has experienced daily congestion and has averaged 33 crashes per year over the past five years. The proposed project would improve public safety and reduce congestion by constructing a wider bridge that can accommodate dedicated left turn lanes onto I-494.

Open House #1
An open house was held on April 17, 2018 to display the preliminary plans. City, county and MnDOT staff were on hand to discuss options, receive feedback and answer questions on the proposed project. View the Open House Presentation Boards (PDF).

Open House #2
  • Wednesday,  January 16, 2019
  • 4:00 - 6:00 p.m.
  • Medicine Lake Room, Plymouth City Hall, 3400 Plymouth Blvd.

Plymouth City Hall | 3400 Plymouth Blvd. | Plymouth, MN 55447-1482
P 763-509-5500 | F 763-509-5510 |

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