US Highways: Histories for Mainline, Suffixed, and Bannered Routes By Mapmikey and Dale Sanderson   7/1/26: Welcome to US Highways: Histories for Mainline, Suffixed, and Bannered Routes. This site is intended to be an update and continuation to the defunct US-Highways.com 7/1/26: Initial roll out of the website Previous Updates

US Highways:    350 | 360 - 360 ALT - 360 Bus - 360-Y | 366 | 370 | 371 | 373 | 376 | 377 - 377 Bus - 377 Loop - 377 Spur | 378 - 378 Bus | 380 - 380 Bus | 381 | 383 | 385 | 393 | 395 - 395 ALT - 395 Bus - 395 Temp | 399 400 | 401 - 401 ALT - 401 Bus - 401 Byp | 410 | 411 - 411 Bus | 412 - 412 ALT - 412 Bus - 412 Byp - 412 Spur - 412-Y | 417 | 420 | 421 - 421 ALT - 421 Bus | WE422ST - EA422ST - 422 ALT - 422 Bus - 422 Byp | 425 | 427 | 430 | 431 - 431 Bus | 441 - 441 ALT - 441 Bus - 441 Byp - 441-N - 441-S - 441 Temp | 450 | 460 - 460 ALT - 460 Bus - 460 Byp - 460 Temp - 460-Y | 466 | 470 | 476 | 485 | 491 501 - 501 ALT - 501 Bus - 501-Y | 511 | 521 - 521 ALT - 521 Bus | 522 - 522 Bus - 522 Byp | 530 - 530 ALT | 541 - 541 ALT | 550 - 550 Bus | 560 | 566 | 570 | 601 - 601 Bus | 611 - 611 ALT - 611 Bus | 622 | 630 | 641 - 641 Bus - 641 Spur - 641 Toll | 650 | 660 | 666 - 666 Bus - 666 Temp - 666-Y | 701 - 701 ALT - 701 Bus | 711 | 730 - 730 Spur | 777 | 789 | 830 | official proposals with no number suggested |

Each entry gives a history of the route to the extent documentation could be found for it. Mapscans are provided throughout. The shorter or newer a route is, the more likely its entry contains the full details. Longer routes will have minor changes omitted.