Deficient major bridges in Montana

The following bridges carry at least 10,000 vehicles a day and have been rated as either structurally deficient or functionally obsolete by inspectors, according to an msnbc.com analysis of the National Bridge Inventory.

Status of "D" means the bridge has been rated structurally deficient; "O" means it has been rated functionally obsolete.

A structurally deficient bridge is closed or restricted to light vehicles because of its deteriorated structural components. While not necessarily unsafe, these bridges must have limits for speed and weight.

A functionally obsolete bridge has older design features and, while it is not unsafe for all vehicles, it cannot safely accommodate current traffic volumes, and vehicle sizes and weights.

The raw dataset of the National Bridge Inventory, which is compiled by the U.S. Department of Transportation's Federal Highway Administration from state reports, was provided by the National Institute for Computer-Assisted Reporting at the University of Missouri. The analysis was done by msnbc.com. This page reflects inspections through December 2005.

Click a county name to view data. CASCADE GALLATIN LEWIS AND CLARK MISSOULA PARK RAVALLI SILVER BOW YELLOWSTONE Status Rating Road Place County Feature Location O 76.6 315 GREAT FALLS CASCADE BNSF RAILROAD GREAT FALLS O 74.5 89 GREAT FALLS CASCADE "MISSOURI RV U5205 O 81.0 103 GREAT FALLS CASCADE INT CENTRAL AVE W I 15 GREAT FALLS O 77.0 103 GREAT FALLS CASCADE "CITY ST BNSF RAILROAD" O 77.0 103 GREAT FALLS CASCADE "CITY ST BNSF RAILROAD" O 94.0 315 CASCADE BNSF RAILROAD GREAT FALLS Status Rating Road Place County Feature Location O 82.0 90 BOZEMAN GALLATIN "P 86 MONT RAIL LINK" O 82.0 90 BOZEMAN GALLATIN "P 86 MONT RAIL LINK" O 77.0 1207 BOZEMAN GALLATIN INT WEST BOZEMAN I-90 BOZEMAN O 77.0 1207 BOZEMAN GALLATIN INT WEST BOZEMAN I-90 BOZEMAN O 78.2 90 GALLATIN "MADISON R MT RAIL LINK" O 78.2 90 GALLATIN "MADISON R MT RAIL LINK" O 92.4 90 GALLATIN SEP HEEB LANE 4 KM E MANHATTAN O 93.4 90 GALLATIN SEP CENTRAL PARK 8 KM W BELGRADE O 93.3 90 GALLATIN SEP FORT ELLIS ROAD 2 KM E BOZEMAN O 93.3 90 GALLATIN SEP FORT ELLIS ROAD 2 KM E BOZEMAN O 77.2 90 GALLATIN MONTANA RAIL LINK 7 KM E BOZEMAN O 77.2 90 GALLATIN MONTANA RAIL LINK 7 KM E BOZEMAN O 93.0 90 GALLATIN INT TRAIL CREEK 12 KM E BOZEMAN D 91.0 90 GALLATIN INT TRAIL CREEK 12 KM E BOZEMAN Status Rating Road Place County Feature Location O 75.0 15 HELENA LEWIS AND CLARK "U5806 MONTANA RAIL LINK" O 76.0 15 HELENA LEWIS AND CLARK "U5806 MONTANA RAIL LINK" O 76.0 12 HELENA LEWIS AND CLARK INT CAPITOL-I 15 HELENA O 76.0 12 HELENA LEWIS AND CLARK INT CAPITOL-I 15 HELENA O 62.2 5802 HELENA LEWIS AND CLARK SEP I 15 HELENA Status Rating Road Place County Feature Location O 86.9 90 MISSOULA MISSOULA INT RESERVE STREET MISSOULA O 86.9 90 MISSOULA MISSOULA INT RESERVE STREET MISSOULA O 93.0 90 MISSOULA MISSOULA INT ORANGE STREET MISSOULA O 93.0 90 MISSOULA MISSOULA INT ORANGE STREET MISSOULA D 55.7 8105 MISSOULA MISSOULA CLARK FORK MISSOULA O 93.0 90 MISSOULA INT NINE MILE 11 KM W FRENCHTOWN O 93.0 90 MISSOULA INT NINE MILE 11 KM W FRENCHTOWN O 93.5 90 MISSOULA SEP HOULE CREEK ROAD 5 KM W FRENCHTOWN O 93.4 90 MISSOULA SEP COUNTY ROAD 6 KM E FRENCHTOWN O 93.4 90 MISSOULA SEP COUNTY ROAD 6 KM E FRENCHTOWN O 77.7 90 MISSOULA CLARK FORK 3 KM W BONNER O 77.7 90 MISSOULA CLARK FORK 3 KM W BONNER O 75.7 90 MISSOULA "SEP CO ROAD CLARK FORK" O 75.7 90 MISSOULA "SEP CO ROAD CLARK FORK" O 66.2 90 MISSOULA MONTANA RAIL LINK 3 KM W CLINTON O 77.4 90 MISSOULA MONTANA RAIL LINK 3 KM W CLINTON Status Rating Road Place County Feature Location O 74.3 90 LIVINGSTON PARK INT S LIVINGSTON-P 11 LIVINGSTON O 93.5 90 LIVINGSTON PARK INT S LIVINGSTON-P 11 LIVINGSTON D 95.0 90 PARK INT HOPPER 14 KM W LIVINGSTON D 90.4 90 PARK SEP COUNTY ROAD 8 KM W LIVINGSTON D 90.4 90 PARK SEP COUNTY ROAD 8 KM W LIVINGSTON O 94.0 90 PARK INT WEST LIVINGSTON 3 KM W LIVINGSTON O 94.0 90 PARK INT WEST LIVINGSTON 3 KM W LIVINGSTON O 78.3 90 PARK YELLOWSTONE RIVER LIVINGSTON O 78.3 90 PARK YELLOWSTONE RIVER LIVINGSTON Status Rating Road Place County Feature Location D 35.5 93 HAMILTON RAVALLI BITTERROOT RIVER 2M N HAMILTON O 46.6 93 RAVALLI SWEATHOUSE CREEK VICTOR Status Rating Road Place County Feature Location O 76.2 15 BUTTE-SILVER BOW (CORP NAME FOR BUTTE) SILVER BOW "MONT WESTERN RWY LOCAL" O 74.2 15 BUTTE-SILVER BOW (CORP NAME FOR BUTTE) SILVER BOW "MONT WESTERN RWY LOCAL" O 75.0 15 BUTTE-SILVER BOW (CORP NAME FOR BUTTE) SILVER BOW INT MONTANA STREET BUTTE O 75.0 15 BUTTE-SILVER BOW (CORP NAME FOR BUTTE) SILVER BOW INT MONTANA STREET BUTTE O 77.0 15 BUTTE-SILVER BOW (CORP NAME FOR BUTTE) SILVER BOW INT HARRISON AVE BUTTE O 79.0 15 BUTTE-SILVER BOW (CORP NAME FOR BUTTE) SILVER BOW INT HARRISON AVE BUTTE O 76.0 15 SILVER BOW NEVERSWEAT RAILROAD 3 KM W BUTTE O 76.0 15 SILVER BOW NEVERSWEAT RAILROAD 3 KM W BUTTE O 76.2 15 SILVER BOW "SM LOCAL RARUS RAILWAY" O 64.0 15 SILVER BOW "SM LOCAL RARUS RAILWAY" O 76.2 15 SILVER BOW "SILVERBOW CR MT WEST RY" O 77.2 15 SILVER BOW "SILVERBOW CR MT WEST RY" Status Rating Road Place County Feature Location O 76.8 90 BILLINGS YELLOWSTONE YELLOWSTONE RIVER BILLINGS O 76.8 90 BILLINGS YELLOWSTONE YELLOWSTONE RIVER BILLINGS O 92.3 90 BILLINGS YELLOWSTONE INT JOHNSON LANE (U1028) 4 KM E BILLINGS O 92.3 90 BILLINGS YELLOWSTONE INT JOHNSON LANE (U1028) 4 KM E BILLINGS O 92.0 3 BILLINGS YELLOWSTONE INT 27TH ST I-90 BILLINGS O 66.0 1031 BILLINGS YELLOWSTONE CANYON CREEK 2M SW BILLINGS D 70.6 1010 BILLINGS YELLOWSTONE MONTANA RAIL LINK BILLINGS D 70.6 1010 BILLINGS YELLOWSTONE MONTANA RAIL LINK BILLINGS D 38.5 1010 BILLINGS YELLOWSTONE LAUREL ROAD - FAU 1020 BILLINGS O 59.6 1010 BILLINGS YELLOWSTONE LAUREL ROAD - FAU 1020 BILLINGS O 65.4 1020 BILLINGS YELLOWSTONE "U1024-25 MONT RAIL LINK" O 77.5 1027 BILLINGS YELLOWSTONE LAKE ELMO DRIVE HILLTOP ROAD-BILLINGS O 76.0 90 LAUREL YELLOWSTONE "INT W LAUREL MT RAIL LK" O 77.0 90 LAUREL YELLOWSTONE "INT W LAUREL MT RAIL LK" O 75.0 90 LAUREL YELLOWSTONE "INT LAUREL-P 4 BN RAIL" D 91.0 90 LAUREL YELLOWSTONE "INT LAUREL-P 4 BN RAIL" O 76.6 90 YELLOWSTONE SEP COUNTY ROAD 9 KM W BILLINGS O 76.6 90 YELLOWSTONE SEP COUNTY ROAD 9 KM W BILLINGS O 77.6 90 YELLOWSTONE CANYON CREEK 5 KM W BILLINGS

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