US 33, VA 33, and US 250 endpoints in Richmond, VA

[Mapmikey]

Here is a WP article from 2000 with discussion of this issue.  May be behind a paywall (let me know and i will copy excerpts):
https://www.washingtonpost.com/archive/local/2000/09/17/vdot-takes-steps-to-reduce-truck-traffic-on-rte-17/998c7e34-8ab9-4b12-8ddd-9bc09c94aca4/

It also implies the truck ban did not come at the same time as the speed limit drop.  I don't remember if it did or not.