Routing traffic through access switch to 2 ISPS one interface

[mohammedalrawiib]

Hello eveybody,

we have a new site it is a small site we have only one access switch and 2 ISPS my manager wants our local traffic to go through our local router through the switch to the other ISPS also we have 3 VLANS we wanna route the traffic from the local router to the other ISPS in the same interface that we receive traffic on as shown in the image how can i do that ? keep in mind one isps is main and the other is back up i just wanna know how to do that how can we route the traffic to both isps on the same interface I have done a lot of research without answer really. 

My local router is R2 and 3 , 4 belongs to the ISPS
your help is really appreciated 

[mohammedalrawiib]

topology 

[MHM Cisco World]

Policy Based Routing (PBR) ⋆ | Cisco Policy-Based Routing | IPCisco

MHM

[mohammedalrawiib]

I think you misunderstood me the router we have is behind the switch our local router , and the other 2 isps are connected to the same access switch the issue that am having is I can't reach the 2 routers from my Pc clients and router I don't really know what to configure.
many thanks for your replay.

[MHM Cisco World]

make SW L3SW and config multi SVI one for each VLAN and do load balance as shown in link I share above 

MHM