Idaho Highway Historical Marker Signs

There are approximatly 266 historical marker signs along Idaho's highways and byways.
Links are provided to pages with pictures,text and coordinates of signs where available.

Last Update:
LINKS LISTED IN NUMERICAL ORDER
This is an attempt to organize them and present them in a simple, easier way to find.

  #13 - Lava Hot Springs   #17 - Idaho's First Railroad   #23 - Idaho's Oldest Town   #28 - Starrh's Ferry  
  #38 - Nez Perce War       #42 - Indian Mission 
  #45 - Mount Borah   #72 - Airmail Service
  #75 - The Ward Massacre    #78 - Marie Dorian 
  #85 - Old Fort Boise





#100 - Camas Prairie #111 - Spalding's Mission #112 - Lapwai Mission #122 - Lewis and Clark
#125 - Historic Lemhi County #127 - Lewis and Clark #128 - Fort Lemhi #135 - Fort Henry
#139 - Pierre's Hole #144 - Old Mission #148 - Kullyspell House #150 - Wild Horse Trail
#151 - The Oregon Trail #152 - Atoms for Peace #153 - Canal Gulch #154 - Wood River Mines
#155 - Long Valley Ambush #156 -Oro Fino City #157 - Thomas Fork #158 - Soda Springs
#159 - Smith's Trading Post #160 - David Thompson #161 - Hudspeth's Cutoff #163 - Lawyer's Canyon
#164-Mullan Military Road #165 - Bonner's Ferry  #166 - Thousand Springs #167 - The First Capital
#168 - Elk City #169 - Hudspeth's Cutoff #170 - Coeur d'Alene Lake #171 - Red Rock Pass
#172 - Shoshone Falls #174 - Fabulous Florence  #175 - Hydraulic Mining #176 - Mackenzie's Post
#177 - Seneacquoteen #183 - Packer John's Cabin #185 - Brownlee Ferry #186 - Idaho City
#188 - Grimes' Creek #192 - Owyhee Country #193 - Initial Point #194 - Steamer Shoshone
#195 - Rattlesnake Station #196 - Bannock War #197 - Toll Gate #198 - Oregon Trail
#199 - Glenn's Ferry   






#204 - Salmon Falls #206 - Payne's Ferry #208 - Milner Dam 
#216 - Bear River Battle
#218 - Camp Connor #219 - John Bidwell
#220 - Bear River Lava #222 - Beaver Canyon
#223 - Taylor's Bridge #224 - Eagle Rock Ferry #225 - John Colter #227 - John Day's River
#229 - Goddin's River
#234 - Gilmore
#235 - Vienna Ghost Town #238 - Bannock Pass
#239 - Sacajawea #240 - Salmon Dam #241 - Fort Bonneville 
#243 - Gibbonsville
#247 - Lolo Summit #248 - Desmet Mission #249 - Lewis and Clark #250 - Slaterville
#252 - 1910 Fire #256 - Purcell Trench #257 - Utah Northern Railway
#259 - Nez Perce War
#261 - Lewis and Clark #262 - Coyote's Fishnet #263 - Snake River
#264 - Ant and Yellowjacket  
#266 - The Old Toll Road #267 - The Three Tetons #268 - Lake Steamers
#269 - Lewis and Clark
#270 - Prehistoric Man #273 - Beaver Dick #274 - American Falls #275 - Paris
#276 - Prehistoric Man #277 - Bannock War #278 - Horse Shoe Bend #279 - University of Idaho
#281 - Submerged Valley #282 - Twin Springs
#283 - Froman's Ferry #284 - Caldron Linn
#285 - The Mullan Road   #286 - John Mullan #287 - Lava Formations 
#289 - Idaho State University #290 - Kellogg's Jackass #291 - College of Idaho #292 - Salmon River
#293 - An Early Industry #294 - Nez Perce War #295 - Freezeout Hill #296 - Charcoal Kilns
#297 - Nuclear Reactors #298 - Salmon River





#300 - Fossil Beds #301 - Menan Buttes #302 - Alexander Ross #303 - Michel Bourdon
#304 - Lost River
#305 - Goodale's Cutoff #306 - Diamondfield Jack
#307 - Chinese Hanging
#308 - William Craig #309 - Asa Smith Mission #310 - Long Camp #312 - MacDonald's Battle
#313 - Salmon River Canyon #314 - Lewis Clark State #315 - Teton Range #316 - Indian Houses
#317 - Lake Bonneville
#318 - More's Creek
#319 - British Settlers
#320 - Lake Pend Oreille
#321 - Glacial Lakes #322 - Sunshine Mine Disaster #323 - Market Lake   
#324-Francois Payette
#325 - Lewis and Clark  #326 - Emigrant Road #327 - White Bird Grade #328 - Bears Ploughed Field
#329 - Ski Lifts  #330 - Fishing Falls #331 - Craigmont #1 & #2  #332 - Nez Perce Village
#333 - Whitehouse Pond #334 - Lolo Trail Crossing #335 - Big Hill #336 - Salmon Festival
#337 - Chesterfield #338 - Oregon Trail  #339 - Emigrant Trails #340 - Hunt
#341 - Minidoka Dam #342 - Rock Creek Station #343 - Diversion Dam #344 - City of Rocks
#345 - Teton Flood #346 - Pierce Courthouse #347 - Looking Glass #348 - Treaty Rock
#349 - Saint Joseph's Mission #350 - Farragut State Park #351 - Pend Oreille City  #352 - Mount Idaho
#353 - Castle Rock #354 - Goodale's Cutoff #356 - Earthquakes #358 - Givens Springs
#359 - Beaver Dick's Ferry #361 - Lower Boise #362 - John Grey #364 - Sawtooth City
#365 - Elephant Hunters #367 - Wallace #369 - Nez Perce Trail #370 - Buffalo Pit
#371 - Railroad Trestles #372 - Camas Prairie #373 - Willow Creek Slide #374 - Mesa Orchards
#375 - Oregon Trail #376 - Arrowrock Dam #377 - Black Canyon Dam #378 - Seven Devils Mines
#379 - Basque Country #380 - War Eagle Mines  #383 - American Falls #384 - Bear Lake
#385 - Hooper Spring #386 - Paris Tabernacle #388 - Hatch House #389 - Sawtell's Ranch
#391 - Caldera Lookout #393 - Hansen Bridge #396 - Volcanic Calderas #398 - Magic Dam




#400 - Gold Mines #404 - BYU-Idaho
#402 - Boise State University #406 - Stanley Ranger Station
#411 - CSI #412 - Shoshone Historic

#413 - Magic Reservoir #415 - NNU
#416 - Clayton Smelter #417 - Lewiston Hill
#418 - Steamboats
#419 - Railroad Tunnels #420 - Old Railroads #421 - Lead-Silver Mines
#422 - Bayview Limekilns #424 - Frisco Mill #425 - McCroskey Park #426 - Burke
#427 - Nez Perce War #428 - Three Buttes #429 - Cote's Defile #430 - Murray Gold Fields
#431 - Range Wars #432 - Old Delta Sediments #433 - Cariboo Mountain #434 - Bison Jump
#435 - Emile Grandjean #436 - Big Butte #441 - Harpster #442 - Emma Edwards
#444 - Lowman #446 - Bank Robbers #447 - Pearl  
#448 - Nez Perce Trail
#449 - Idahome #452 - Pierre J. DeSmet
#454 - Diamond Gulch #455 - Emigrant Crossing
#456 - McAuley's Road
#461 - Harriman Wildlife #462 - Harriman State Park #466 - Gold Rush Ferry
#468 - Logging Railroads #483 - New Plymouth #484 - Galena
#485 - Elk City Wagon Road 
#486 - Lenore Tram #487 - 11,000 Years  Occupation #488 - Lewis and Clark #489 - Lewis and Clark
#490 - Albion Normal College #491 - Kootenai Tribe of Idaho #492 - Lewis and Clark #493 - The Utter Disaster
#494-BYU of Idaho
#495 - Tsceminicum #496 - Splash Dams #499 - First Public Building



#500 - Nez Perce War #501 - 18th St. Bridge #502 - John Silcott #504 - Worlds Largest Mill
#505 - Company Town
#506 - Camp Rupert 1943-1946 #507 - Idaho Hermits #508 - Mount McCALEB
#509 - GOST TOWNS OF MACKAY