Highway Exit or Milepost Google Maps GPS Elevation Water Dump Access Interstate I-84 (OR) Milepost 186.5 Between Exits 75 and 87 Stanfield Rest Area 45°46'12.86"N 119°15'6.59"W 45°46'18.44"N 119°15'2.88"W 583' 583' Milepost 186.5 Eastbound Milepost 186.5 Westbound - Milepost 228.9 18 Miles East Of Pendleton Deadman Pass Rest Area 45°35'55.97"N 118°30'16.20"W 45°36'5.40"N 118°30'28.73"W 3635' 3577' Closed Winter Milepost 228.9 Eastbound Milepost 228.9 Westbound - Milepost 253  8 Miles West of La Grande  Hilgard Junction State Park 45°20'15.19"N 118°14'28.44"W 3046'     Milepost 253 Eastbound and Westbound (Hilgard Highway 244 Exit) - Milepost 269.2 9 miles East of La Grande Charles Reynolds Rest Area 45°14'5.24"N 118°0'56.05"W 45°14'7.87"N 118°0'42.12"W 2877' 2864' Closed Winter Milepost 269.2 Eastbound Milepost 269.2 Westbound - Milepost 295 10 Miles West of Baker Baker Valley Rest Area 44°54'49.46"N 117°49'7.07"W 44°54'50.72"N 117°49'18.73"W 3473' 3451' Closed Winter Milepost 295 Eastbound Milepost 295 Westbound - Milepost 335.9 38 Miles West of Ontario Weatherby Rest Stop 44°29'44.99"N 117°21'58.21"W 3403'     Milepost 335.9 Exit Before Overpass - East on Sisley Creek Road) - Milepost 374 Ontario State Park 44°2'48.66"N 116°58'23.95"W 2142'     Milepost 374 Exit Eastward Before Overpass Olds Ferry - Ontario Highway - Milepost 377.4 1 Mile East of Ontario State Park Ontario Info Center 44°0'57.13"N 116°56'39.52"W 2149' Closed Winter Milepost 377.4 Westbound Only I-84 Idaho Milepost 1 Snake River View Rest Area Visitor Information Center 43°59'35.70"N 116°56'8.16"W 2225' Milepost 1 Eastbound Only (Westbound Use Overpasses) - Milepost 62 Black's Creek Rest Area 43°28'39.90"N 116°6'26.71"W 43°28'43.61"N 116°6'17.46"W 3361' 3363' Milepost 62 Eastbound Milepost 62 Westbound - Milepost 133 Bliss Rest Area 42°56'15.58"N 115°4'23.38"W 42°56'25.30"N 115°4'23.52"W 3079' 3082' Milepost 133 Eastbound Milepost 133 Westbound - Exit 172   3500' Exit 172