Wifi Router signal Brodcast assistance

Even if that gets the signal across the road, the receiving devices may not have enough power to send the signal back.  There are devices made for that purpose with directional antennas and an Ethernet interface on both ends.

Check your current WiFi signal from across the street.  You can use WiFi analyzer on an android phone.  I assume something like it exists on an iPhone.   I have one customer using his WiFi router placed near a window in his main bldg.  and a TP link range extender in a window across a 5 lane road with another 20 feet of lawn on each side.  The range extender runs a couple wireless laptops, 2 WiFi printers (one in each bldg.) and a music streamer and connects via ethernet  to a Qsee POE NVR with 6 attached video cameras.  All that stuff gets their Internet through the router in the main bldg.   So, if you can get decent signal on the other side, you might not need special beam forming stuff.  

See:  https://www.cnet.com/how-to/how-to-optimize-your-wi-fi-network-with-wifi-analyzer/
and get it here:  https://play.google.com/store/apps/details?id=com.farproc.wifi.analyzer&hl=en