Map combo for ETS2 1.57 is currently irredeemable. You can combine classic pack of Promods, Roex and Rusmap but without Nordic Horizons (DLC will be overlap by Promods). If we exclude Promods we get current Rusmap which is not integrated with Horizons and will have broken roads. Horizonless combo make sense but it is shame to avoid such a beautiful expansion. So I provide an option but you should pick which one is preferable for you.
This update for ETS 1.57 includes Promods, Roextended, Rusmap and some other smaller but compatible maps. 12 maps, 31 files, RCs, fixes. As always please follow the instructions in video and note that combo designed to version 1.57 and requires all map DLCs (Nordic Horizons is optional and will not be available in this particular setup). Paid mods are optional.
If you don’t have experience with map combos please first watch Beginner’s Guide

Links

📌Roextended 4.9 (paid or free version) https://trucksim.top/dlpr
📌Roex Road Connections (Roex, Promods, RM) https://trucksim.top/04ky
📌Promods 2.77 https://trucksim.top/zzoj (Tutorial Promods https://youtu.be/bkrCswVy7p8)
📌JRR (Java Road Revolution) 0.91a https://trucksim.top/toe0
📌rusmap 2.57 https://trucksim.top/dgx5
📌Iberia RW 1.37 https://trucksim.top/7627
📌Portugal Rebuild (Promods addon) 0.1.6 https://trucksim.top/g9xj
📌Barcelona Expansion (Promods add-on) 1.8 https://trucksim.top/qahq
📌Oberhavel 1.7.3 (1.57) https://trucksim.top/of43
📌Großwilfersdorf 1.2 https://trucksim.top/5d33
📌Ireland Map 0.1.1 https://trucksim.top/62lb
📌Ireland Map FIX 1.7 https://trucksim.top/rs6g
📌Latvia Rebuild 1.28-1.57 https://trucksim.top/ktc2
📌SFIGC 0.6-1.57 https://trucksim.top/0o1d

Mandatory Map Background:
📌Dark Background Map https://trucksim.top/cs77

Bonus Mods:

📌Route Advisor/Mini Mirrors for ETS2 https://trucksim.top/z9fj