Build a TUNNEL along/on top of 2nd St N, from the RR tracks to 1st Ave N to keep 2nd St
open during our annual record flood, and to finally give permanent flood protection to that section of downtown Fargo.

Glaze the tunnel roof to allow natural light to flood the interior.

Span the tunnel at 2 or 3 places with pedestrian overpasses leading to the river/Moorhead

Add a pedestrian walkway along the entire east side atop this project, and incorporate stairs at regular intervals leading down to riverside amenities. Also build in decks, patios, overlooks, kiosk space, bike stands, bait shop, x-country ski lockers, whatever on the east side...

Reserve large opening on NE corner of 4th Av & 2nd St N for truck/bus/car access down to riverside. Perhaps GoFargo's downtown 'lake' amenity could be sited down there?
(This opening would be sealed during floods.)

Reserve openings at 3rd & 4th avenues north for traffic access coming/going. (Traffic lights within the tunnel will be suspended from the ceiling.)

Use wild colors on the concrete to stimulate the senses...change color schemes frequently...