Late last year Chippewa got a road diet using paint, not concrete. Four traffic lanes were reduced to two with a center turn lane, and a bike lane was added in each direction. Under the railroad bridge between Gravois & Meramec was the part that confused me, with a wide lane to the right of the new bike lane. The other day I was finally in a place where I could get some photos.
Because of the railroad tracks pedestrians haven’t been able to walk in an east-west direction along Chippewa. Up top the tracks are a barrier and the underpass was designed decades ago only for vehicles. Online I found Chippewa Bike Lanes: A Review:
The pedestrian lane under the viaduct seems like a creative and appropriate solution to the problem of pedestrian connectivity along aging infrastructure. It is important that the pedestrian lane be separated from automobile traffic, and the traffic cones are obviously a temporary fix. We look forward to seeing the permanent configuration, and will update this post as the project evolves.
Hopefully the traffic cones are just temporary, but replaced with what? The excellent images on the post Chippewa Bike Lanes: A Review show how lanes shift, with the risk of motorists ending up driving in the bike/pedestrian lanes.
— Steve Patterson.