Survey No.Name (as assigned by HAER)StatusType[2]BuiltDocumentedCarriesCrossesLocationCountyCoordinatesMT-1Victor BridgeReplacedPratt truss19071981S-370Bitterroot RiverVictorRavalli46°24′52″N 114°07′37″W / 46.41444°N 114.12694°W / 46.41444; -114.12694 (Victor Bridge)MT-2York BridgeReplacedPennsylvania truss19061981S-280Trout CreekHelenaLewis and Clark46°42′39″N 111°46′48″W / 46.71083°N 111.78000°W / 46.71083; -111.78000 (York Bridge)MT-4Milk River Bridge at CoburgExtantParker truss19161980Local Road 194Milk RiverCoburgBlaine48°26′37″N 108°25′30″W / 48.44361°N 108.42500°W / 48.44361; -108.42500 (Milk River Bridge at Coburg)MT-7Fromberg BridgeExtantReinforced concrete closed-spandrel arch19141980East River StreetClarks Fork Yellowstone RiverFrombergCarbon45°23′30″N 108°53′42″W / 45.39167°N 108.89500°W / 45.39167; -108.89500 (Fromberg Bridge)MT-8Tenth Street BridgeBypassedReinforced concrete open-spandrel arch1920198010th Street NorthMissouri RiverGreat FallsCascade47°31′14″N 111°17′25″W / 47.52056°N 111.29028°W / 47.52056; -111.29028 (Tenth Street Bridge)MT-9Fort Benton BridgeBypassedSwing span1888198015th StreetMissouri RiverFort BentonChouteau47°49′01″N 110°39′58″W / 47.81694°N 110.66611°W / 47.81694; -110.66611 (Fort Benton Bridge)MT-10Springdale BridgeReplacedPennsylvania truss19081981S-563Yellowstone RiverSpringdalePark45°44′38″N 110°13′58″W / 45.74389°N 110.23278°W / 45.74389; -110.23278 (Springdale Bridge)MT-12Barber BridgeReplacedPratt truss19111982South Barber RoadMusselshell RiverBarberGolden Valley46°18′30″N 109°23′07″W / 46.30833°N 109.38528°W / 46.30833; -109.38528 (Barber Bridge)MT-13Fort Keogh BridgeDemolishedPennsylvania truss19021980Local Road 056Yellowstone RiverMiles CityCuster46°23′54″N 105°53′45″W / 46.39833°N 105.89583°W / 46.39833; -105.89583 (Fort Keogh Bridge)MT-14Kinsey BridgeExtantParker truss19071980Milwaukee RoadYellowstone RiverMiles CityCuster46°31′54″N 105°42′51″W / 46.53167°N 105.71417°W / 46.53167; -105.71417 (Kinsey Bridge)MT-15Paragon BridgeExtantParker truss19071980Milwaukee RoadYellowstone RiverMiles CityCuster46°22′14″N 105°56′13″W / 46.37056°N 105.93694°W / 46.37056; -105.93694 (Paragon Bridge)MT-16Tongue River BridgeReplacedPennsylvania truss18791980Local Road 054 (Pacific Avenue)Tongue RiverMiles CityCuster46°23′56″N 105°51′18″W / 46.39889°N 105.85500°W / 46.39889; -105.85500 (Tongue River Bridge)MT-17Deerfield BridgeDemolishedPratt truss19131980Cristy Bottom RoadJudith RiverDanversFergus47°14′27″N 109°40′52″W / 47.24083°N 109.68111°W / 47.24083; -109.68111 (Deerfield Bridge)MT-18Judith River BridgeReplacedWarren truss19121980Tognetti RoadJudith RiverMooreFergus47°03′48″N 109°44′05″W / 47.06333°N 109.73472°W / 47.06333; -109.73472 (Judith River Bridge)MT-19Sample’s Crossing BridgeReplacedParker truss18991980MT 81Judith RiverDanversFergus47°16′25″N 109°43′12″W / 47.27361°N 109.72000°W / 47.27361; -109.72000 (Sample’s Crossing Bridge)MT-20Coram BridgeExtantBaltimore truss19001980Great Northern RailwayFlathead RiverCoramFlathead48°24′34″N 114°03′12″W / 48.40944°N 114.05333°W / 48.40944; -114.05333 (Coram Bridge)MT-21Old Steel BridgeReplacedPratt truss18941980Steel Bridge RoadFlathead RiverKalispellFlathead48°12′37″N 114°15′27″W / 48.21028°N 114.25750°W / 48.21028; -114.25750 (Old Steel Bridge)MT-22St. Mary River Bridge and SiphonExtantPratt truss19151980Camp Nine RoadSt. Mary RiverBabbGlacier48°56′37″N 113°22′14″W / 48.94361°N 113.37056°W / 48.94361; -113.37056 (St. Mary River Bridge and Siphon)MT-23Dearborn River High BridgeExtantPratt truss18971980S-434Dearborn RiverAugustaLewis and Clark47°16′52″N 112°23′25″W / 47.28111°N 112.39028°W / 47.28111; -112.39028 (Dearborn River High Bridge)MT-24Wolf Creek BridgeExtantWarren truss19331980Recreation RoadMissouri RiverCraigLewis and Clark47°01′08″N 112°00′44″W / 47.01889°N 112.01222°W / 47.01889; -112.01222 (Wolf Creek Bridge)MT-25Roundup BridgeExtantParker truss18941980Goffena RoadMusselshell RiverRoundupMusselshell46°29′29″N 108°17′15″W / 46.49139°N 108.28750°W / 46.49139; -108.28750 (Roundup Bridge)MT-26Calipso BridgeExtantParker truss19071980Milwaukee RoadYellowstone RiverTerryPrairie46°46′47″N 105°24′41″W / 46.77972°N 105.41139°W / 46.77972; -105.41139 (Calipso Bridge)MT-27Snowden BridgeExtantVertical-lift bridge19131980Great Northern RailwayMissouri RiverNohly and BainvilleRichland and Roosevelt48°00′00″N 104°05′44″W / 48.00000°N 104.09556°W / 48.00000; -104.09556 (Snowden Bridge)MT-28Main Channel BridgeExtantPratt truss19111980South Gallatin StreetClark Fork RiverThompson FallsSanders47°35′25″N 115°21′20″W / 47.59028°N 115.35556°W / 47.59028; -115.35556 (Main Channel Bridge)MT-29Dry Channel BridgeExtantPratt truss19111980South Gallatin StreetClark Fork RiverThompson FallsSanders47°35′37″N 115°21′14″W / 47.59361°N 115.35389°W / 47.59361; -115.35389 (Dry Channel Bridge)MT-49Fish Creek BridgeReplacedWarren truss19341987Cyr–Iron Mountain RoadFish CreekAlbertonMineral47°00′23″N 114°41′39″W / 47.00639°N 114.69417°W / 47.00639; -114.69417 (Fish Creek Bridge)MT-56Rock Creek BridgeReplacedPratt truss19011988Main StreetRock CreekJolietCarbon45°28′52″N 108°58′04″W / 45.48111°N 108.96778°W / 45.48111; -108.96778 (Rock Creek Bridge)MT-59Vandalia BridgeReplacedPennsylvania truss19101988Vandalia RoadMilk RiverGlasgowValley48°21′30″N 106°54′17″W / 48.35833°N 106.90472°W / 48.35833; -106.90472 (Vandalia Bridge)MT-60Duck Creek BridgeReplacedWarren truss19151988S-329 (Duck Creek Road)Yellowstone RiverBillingsYellowstone45°41′37″N 108°38′27″W / 45.69361°N 108.64083°W / 45.69361; -108.64083 (Duck Creek Bridge)MT-61Pine Creek BridgeReplacedParker truss19101988Pine Creek RoadYellowstone RiverLivingstonPark45°30′40″N 110°34′54″W / 45.51111°N 110.58167°W / 45.51111; -110.58167 (Pine Creek Bridge)MT-62Greycliff BridgeReplacedParker truss19111988Lower Sweet Grass RoadYellowstone RiverGreycliffSweet Grass45°45′36″N 109°46′19″W / 45.76000°N 109.77194°W / 45.76000; -109.77194 (Greycliff Bridge)MT-63Blaine Spring Creek BridgeExtantPratt truss18921989S-249Blaine Spring CreekEnnisMadison45°13′57″N 111°45′23″W / 45.23250°N 111.75639°W / 45.23250; -111.75639 (Blaine Spring Creek Bridge)MT-64Upper Madison BridgeExtantPratt truss18972013S-249Madison RiverEnnisMadison45°13′58″N 111°45′06″W / 45.23278°N 111.75167°W / 45.23278; -111.75167 (Upper Madison Bridge)MT-67-AMT-73Avalanche Creek BridgeExtantReinforced concrete cast-in-place slab19351991Going-to-the-Sun RoadAvalanche CreekWest GlacierFlathead48°40′49″N 113°49′09″W / 48.68028°N 113.81917°W / 48.68028; -113.81917 (Avalanche Creek Bridge)MT-67-AMT-75Logan Creek BridgeExtantReinforced concrete cast-in-place slab19261991Going-to-the-Sun RoadLogan CreekWest GlacierFlathead48°43′29″N 113°45′54″W / 48.72472°N 113.76500°W / 48.72472; -113.76500 (Logan Creek Bridge)MT-67-AMT-82Baring Creek BridgeExtantReinforced concrete closed-spandrel arch19311991Going-to-the-Sun RoadBaring CreekWest GlacierFlathead48°40′42″N 113°35′45″W / 48.67833°N 113.59583°W / 48.67833; -113.59583 (Baring Creek Bridge)MT-67-AMT-84St. Mary River BridgeExtantReinforced concrete closed-spandrel arch19331991Going-to-the-Sun RoadSt. Mary RiverWest GlacierFlathead48°44′58″N 113°26′38″W / 48.74944°N 113.44389°W / 48.74944; -113.44389 (St. Mary River Bridge)MT-67-BMT-69Common Drainage CulvertExtantCulvert19371991Going-to-the-Sun RoadUnnamed streamWest GlacierFlathead48°32′14″N 113°57′51″W / 48.53722°N 113.96417°W / 48.53722; -113.96417 (Common Drainage Culvert)MT-67-BMT-70Sprague Creek CulvertExtantReinforced concrete cast-in-place slab19311991Going-to-the-Sun RoadSprague CreekWest GlacierFlathead48°36′16″N 113°53′01″W / 48.60444°N 113.88361°W / 48.60444; -113.88361 (Sprague Creek Culvert)MT-67-BMT-71Snyder Creek CulvertExtantReinforced concrete cast-in-place slab19361991Going-to-the-Sun RoadSnyder CreekWest GlacierFlathead48°36′59″N 113°52′34″W / 48.61639°N 113.87611°W / 48.61639; -113.87611 (Snyder Creek Culvert)MT-67-BMT-72Horse Trail UnderpassExtantReinforced concrete cast-in-place slab19361991Going-to-the-Sun RoadGlacier National Park trailWest GlacierFlathead48°38′19″N 113°51′35″W / 48.63861°N 113.85972°W / 48.63861; -113.85972 (Horse Trail Underpass)MT-67-BMT-74Creek CulvertExtantReinforced concrete cast-in-place slab19261991Going-to-the-Sun RoadUnnamed streamWest GlacierFlathead48°40′46″N 113°45′55″W / 48.67944°N 113.76528°W / 48.67944; -113.76528 (Creek Culvert)MT-67-BMT-78Haystack Creek CulvertExtantReinforced concrete cast-in-place slab19261991Going-to-the-Sun RoadHaystack CreekWest GlacierFlathead48°44′19″N 113°44′43″W / 48.73861°N 113.74528°W / 48.73861; -113.74528 (Haystack Creek Culvert)MT-67-BMT-81Siyeh Creek CulvertExtantReinforced concrete cast-in-place slab19311991Going-to-the-Sun RoadSiyeh CreekWest GlacierFlathead48°42′06″N 113°40′04″W / 48.70167°N 113.66778°W / 48.70167; -113.66778 (Siyeh Creek Culvert)MT-68Belton BridgeExtantReinforced concrete open-spandrel arch19201992Going-to-the-Sun RoadFlathead River middle forkWest GlacierFlathead48°29′59″N 113°58′11″W / 48.49972°N 113.96972°W / 48.49972; -113.96972 (Belton Bridge)MT-77Granite Creek CulvertExtantReinforced concrete closed-spandrel arch19261992Going-to-the-Sun RoadGranite CreekWest GlacierFlathead48°44′33″N 113°46′16″W / 48.74250°N 113.77111°W / 48.74250; -113.77111 (Granite Creek Culvert)MT-79Triple ArchesExtantStone arch19281992Going-to-the-Sun RoadPollock Mountain riftWest GlacierFlathead48°43′00″N 113°43′06″W / 48.71667°N 113.71833°W / 48.71667; -113.71833 (Triple Arches)MT-85Divide Creek BridgeExtantReinforced concrete cast-in-place slab19351992Going-to-the-Sun RoadDivide CreekWest GlacierFlathead48°44′39″N 113°25′53″W / 48.74417°N 113.43139°W / 48.74417; -113.43139 (Divide Creek Bridge)MT-95-LRainbow Hydroelectric Facility, Stone CulvertDemolishedStone arch19252009Swimming Pool RoadUnnamed streamGreat FallsCascade47°32′16″N 111°11′52″W / 47.53778°N 111.19778°W / 47.53778; -111.19778 (Rainbow Hydroelectric Facility, Stone Culvert)MT-95-MRainbow Hydroelectric Facility, Plank BridgeDemolishedTimber stringer19252009Swimming Pool RoadUnnamed streamGreat FallsCascade47°32′17″N 111°11′52″W / 47.53806°N 111.19778°W / 47.53806; -111.19778 (Rainbow Hydroelectric Facility, Plank Bridge)MT-96Wolf Point BridgeReplacedPennsylvania truss19301997MT 13Missouri RiverWolf Point and VidaRoosevelt and McCone48°04′02″N 105°32′06″W / 48.06722°N 105.53500°W / 48.06722; -105.53500 (Wolf Point Bridge)MT-99Orange Street BridgeReplacedWarren truss19371999Orange StreetClark Fork RiverMissoulaMissoula46°52′18″N 114°00′03″W / 46.87167°N 114.00083°W / 46.87167; -114.00083 (Orange Street Bridge)MT-100Milwaukee Road Railroad OverpassReplacedReinforced concrete T-beam19361999Orange StreetMilwaukee RoadMissoulaMissoula46°52′13″N 114°00′10″W / 46.87028°N 114.00278°W / 46.87028; -114.00278 (Milwaukee Road Railroad Overpass)MT-102Bundy BridgeBypassedWarren truss19151998Bundy RoadYellowstone RiverPompey’s PillarYellowstone45°59′51″N 108°00′32″W / 45.99750°N 108.00889°W / 45.99750; -108.00889 (Bundy Bridge)MT-103Voges BridgeReplacedPratt truss19141998Grey Bear RoadYellowstone RiverBig TimberSweet Grass45°47′24″N 110°03′59″W / 45.79000°N 110.06639°W / 45.79000; -110.06639 (Voges Bridge)MT-106Milk River BridgeReplacedParker truss19111999Tampico North RoadMilk RiverTampicoValley48°18′30″N 106°49′21″W / 48.30833°N 106.82250°W / 48.30833; -106.82250 (Milk River Bridge)MT-107Buckingham Coulee BridgeReplacedTimber stringer19361999S-311Buckingham CouleeHyshamTreasure46°15′16″N 107°17′01″W / 46.25444°N 107.28361°W / 46.25444; -107.28361 (Buckingham Coulee Bridge)MT-112Missouri River BridgeReplacedPratt truss19042002Bridge StreetMissouri RiverCraigLewis and Clark47°04′28″N 111°57′41″W / 47.07444°N 111.96139°W / 47.07444; -111.96139 (Missouri River Bridge)MT-114Logan OverpassReplacedReinforced concrete T-beam19342003S-205Montana Rail LinkLoganGallatin45°53′05″N 111°26′13″W / 45.88472°N 111.43694°W / 45.88472; -111.43694 (Logan Overpass)MT-115Logan ViaductDemolishedReinforced concrete T-beam19342004S-205Trident RoadLoganGallatin45°53′06″N 111°26′18″W / 45.88500°N 111.43833°W / 45.88500; -111.43833 (Logan Viaduct)MT-116Garrison BridgeReplacedPratt truss19122004Sawmill RoadClark Fork RiverGarrisonPowell46°31′11″N 112°48′29″W / 46.51972°N 112.80806°W / 46.51972; -112.80806 (Garrison Bridge)MT-117Toluca OverpassReplacedReinforced concrete T-beam19362004US 87 / US 212 (former)Burlington Northern RailroadHardinBig Horn45°44′44″N 107°51′30″W / 45.74556°N 107.85833°W / 45.74556; -107.85833 (Toluca Overpass)MT-118Rosebud Creek BridgeReplacedWarren truss19292004S-446Rosebud CreekRosebudRosebud46°16′08″N 106°28′39″W / 46.26889°N 106.47750°W / 46.26889; -106.47750 (Rosebud Creek Bridge)MT-119Tongue River BridgeReplacedSteel built-up girder19342004I-94 BL (Main Street)Tongue RiverMiles CityCuster46°24′13″N 105°51′31″W / 46.40361°N 105.85861°W / 46.40361; -105.85861 (Tongue River Bridge)MT-122Scenic BridgeExtantPratt truss19282004US 10 (former)Clark Fork RiverTarkioMineral47°01′12″N 114°39′25″W / 47.02000°N 114.65694°W / 47.02000; -114.65694 (Scenic Bridge)MT-123Merrill BridgeReplacedParker truss19132005Snake Creek–Merrill RoadMilk RiverHarlemBlaine48°31′28″N 108°51′19″W / 48.52444°N 108.85528°W / 48.52444; -108.85528 (Merrill Bridge)MT-124Belt Creek BridgeReplacedWarren truss19232005Belt StreetBelt CreekBeltCascade47°23′13″N 110°55′37″W / 47.38694°N 110.92694°W / 47.38694; -110.92694 (Belt Creek Bridge)MT-125Belt Creek BridgeDemolishedSteel rolled stringer19362005S-288Belt CreekWalthamChouteau47°32′41″N 110°53′59″W / 47.54472°N 110.89972°W / 47.54472; -110.89972 (Belt Creek Bridge)MT-127Ten Mile Creek BridgeReplacedPratt truss18952004Williams StreetTen Mile CreekHelenaLewis and Clark46°36′19″N 112°05′18″W / 46.60528°N 112.08833°W / 46.60528; -112.08833 (Ten Mile Creek Bridge)MT-129Silver BridgeReplacedWarren truss19402004US 93Bitterroot RiverHamiltonRavalli46°16′42″N 114°09′43″W / 46.27833°N 114.16194°W / 46.27833; -114.16194 (Silver Bridge)MT-131Rock Creek BridgeReplacedPratt truss19912006Fox RoadRock CreekFoxCarbon45°16′38″N 109°12′35″W / 45.27722°N 109.20972°W / 45.27722; -109.20972 (Rock Creek Bridge)MT-133Chicago, Milwaukee, St. Paul & Pacific Railroad Company Bridge No. DD-302DemolishedTrestle19072006Milwaukee RoadClark Fork RiverBonnerMissoula46°51′51″N 113°52′41″W / 46.86417°N 113.87806°W / 46.86417; -113.87806 (Chicago, Milwaukee, St. Paul & Pacific Railroad Company Bridge No. DD-302)MT-134Milltown BridgeExtantParker truss19212007Anaconda StreetBlackfoot RiverMilltownMissoula46°52′24″N 113°52′58″W / 46.87333°N 113.88278°W / 46.87333; -113.88278 (Milltown Bridge)MT-137Pearson BridgeReplacedWarren truss19212007Vaughn–Ulm RoadSun RiverVaughnCascade47°32′44″N 111°31′48″W / 47.54556°N 111.53000°W / 47.54556; -111.53000 (Pearson Bridge)MT-139Two Medicine River BridgeReplacedWarren truss19422009US 2Two Medicine RiverEast Glacier Park VillageGlacier48°27′00″N 113°12′23″W / 48.45000°N 113.20639°W / 48.45000; -113.20639 (Two Medicine River Bridge)MT-142Heron BridgeExtantCantilever19202010Heron RoadClark Fork River and Cabinet GorgeHeronSanders48°04′07″N 115°58′46″W / 48.06861°N 115.97944°W / 48.06861; -115.97944 (Heron Bridge)MT-144Big Hole River BridgeReplacedWarren truss19142010Pumphouse RoadBig Hole RiverDivideSilver Bow45°45′35″N 112°48′06″W / 45.75972°N 112.80167°W / 45.75972; -112.80167 (Big Hole River Bridge)MT-146Main Street BridgeReplacedReinforced concrete cast-in-place slab19332013I-90 BL (Main Street)Cottonwood CreekDeer LodgePowell46°24′07″N 112°44′06″W / 46.40194°N 112.73500°W / 46.40194; -112.73500 (Main Street Bridge)MT-147Swan River BridgeExtantPrestressed concrete beam19632013S-209Swan RiverBigforkFlathead48°03′03″N 113°58′58″W / 48.05083°N 113.98278°W / 48.05083; -113.98278 (Swan River Bridge)MT-149Fort Shaw Canal BridgeExtantReinforced concrete T-beam19342013MT 21 (Simms–Augusta Road)Fort Shaw CanalSimmsCascade47°29′42″N 111°58′54″W / 47.49500°N 111.98167°W / 47.49500; -111.98167 (Fort Shaw Canal Bridge)MT-150Swiftcurrent BridgeReplacedReinforced concrete cast-in-place slab19302014Glacier Route 3 (Babb–Many Glacier Road)Swiftcurrent CreekBabbGlacier48°47′58″N 113°39′24″W / 48.79944°N 113.65667°W / 48.79944; -113.65667 (Swiftcurrent Bridge)MT-151Elk Creek BridgeExtantReinforced concrete T-beam19352014MT 21 (Augusta–Sun River Road)Elk CreekAugustaLewis and Clark47°30′09″N 112°22′02″W / 47.50250°N 112.36722°W / 47.50250; -112.36722 (Elk Creek Bridge)MT-152Musselshell River BridgeExtantPratt truss19162012Parrott Creek RoadMusselshell RiverRoundupMusselshell46°28′18″N 108°23′29″W / 46.47167°N 108.39139°W / 46.47167; -108.39139 (Musselshell River Bridge)MT-153Musselshell River Bridge near AbsherExtantWarren truss19162012Queens Point RoadMusselshell RiverMelstoneMusselshell46°33′32″N 107°58′39″W / 46.55889°N 107.97750°W / 46.55889; -107.97750 (Musselshell River Bridge near Absher)MT-155Brown’s Gulch BridgeExtantReinforced concrete cast-in-place slab19212015S-276Brown’s Gulch CreekButteSilver Bow46°03′39″N 112°36′51″W / 46.06083°N 112.61417°W / 46.06083; -112.61417 (Brown’s Gulch Bridge)MT-156Griffith Creek BridgeExtantTimber stringer19322015Local Road 300Griffith CreekGlendiveDawson47°06′16″N 104°35′50″W / 47.10444°N 104.59722°W / 47.10444; -104.59722 (Griffith Creek Bridge)MT-157Axtell BridgeExtantWarren truss19192015Axtell–Anceney RoadGallatin RiverGallatin GatewayGallatin45°37′23″N 111°12′19″W / 45.62306°N 111.20528°W / 45.62306; -111.20528 (Axtell Bridge)MT-158South Fork of the Flathead River BridgeReplacedSteel built-up girder19382015US 2Flathead River south forkHungry HorseFlathead48°23′04″N 114°04′43″W / 48.38444°N 114.07861°W / 48.38444; -114.07861 (South Fork of the Flathead River Bridge)MT-159Beaver Creek BridgeExtantSteel built-up girder19402015MT 7 (Old U.S. 10)Beaver CreekWibauxWibaux46°59′24″N 104°11′01″W / 46.99000°N 104.18361°W / 46.99000; -104.18361 (Beaver Creek Bridge)MT-160Kern’s Crossing BridgeExtantPratt truss19072015Bridge RoadStillwater RiverAbsarokeeStillwater45°31′43″N 109°28′10″W / 45.52861°N 109.46944°W / 45.52861; -109.46944 (Kern’s Crossing Bridge)MT-161Conley Street BridgeExtantReinforced concrete T-beam19122016Conley AvenueClark Fork RiverDeer LodgePowell46°23′26″N 112°44′14″W / 46.39056°N 112.73722°W / 46.39056; -112.73722 (Conley Street Bridge)MT-162Old Scobey Road BridgeExtantPratt truss19132016Old Scobey RoadPoplar RiverScobeyDaniels48°47′11″N 105°27′13″W / 48.78639°N 105.45361°W / 48.78639; -105.45361 (Old Scobey Road Bridge)MT-165Beaver Creek BridgeExtantPratt truss19112016Larb Creek RoadBeaver CreekSacoPhillips48°26′58″N 107°20′42″W / 48.44944°N 107.34500°W / 48.44944; -107.34500 (Beaver Creek Bridge)MT-166Armells Creek BridgeExtantTimber stringer19622016Horse Ranch RoadArmells CreekRoyFergus47°23′47″N 109°07′54″W / 47.39639°N 109.13167°W / 47.39639; -109.13167 (Armells Creek Bridge)MT-167Big Porcupine Creek BridgeExtantWarren truss19142016Big Porcupine RoadBig Porcupine CreekIngomarRosebud46°35′05″N 107°05′45″W / 46.58472°N 107.09583°W / 46.58472; -107.09583 (Big Porcupine Creek Bridge)MT-168Maclay BridgeExtantParker truss19532016North AvenueBitterroot RiverMissoulaMissoula46°51′10″N 114°05′52″W / 46.85278°N 114.09778°W / 46.85278; -114.09778 (Maclay Bridge)MT-170Milk River BridgeExtantPennsylvania truss19102011North Fork RoadMilk RiverZurichBlaine48°34′41″N 109°06′37″W / 48.57806°N 109.11028°W / 48.57806; -109.11028 (Milk River Bridge)MT-171South Fork of Milk River BridgeExtantReinforced concrete closed-spandrel arch19282017US 89Milk River south forkKiowaGlacier48°39′05″N 113°19′13″W / 48.65139°N 113.32028°W / 48.65139; -113.32028 (South Fork of Milk River Bridge)MT-173Yellowstone River BridgeExtantPratt truss19302017Twin Bridges RoadYellowstone RiverReed PointStillwater45°41′12″N 109°26′18″W / 45.68667°N 109.43833°W / 45.68667; -109.43833 (Yellowstone River Bridge)MT-174Musselshell River BridgeExtantSteel rolled stringer19432017US 12Musselshell RiverMelstoneMusselshell46°37′14″N 107°49′17″W / 46.62056°N 107.82139°W / 46.62056; -107.82139 (Musselshell River Bridge)
Recent Comments