Yep, there's a little problem here! Cyclists and walkers were bypassing the road closure on Thursday evening by crossing the ditch or by way of the adjacent RR tracks.
From the Arkansas Times blog:
THE CITY VS. WINTER, PART I: Little Rock City Hall reports:
Due to a collapsed drainage pipe, a portion of River Mountain Road in Two Rivers Park will be closed off to vehicle, pedestrian and bicycle traffic effective immediately until further notice.
This part of the road is located at the bottom of the hill headed east. There will be no access from the west side of Two Rivers Bridge. The expected repair time is approximately 8-10 weeks.
Until repairs are completed, the Two Rivers Bridge may be accessed through Murray Park via Rebsamen Park Road. We apologize for any inconvenience.