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Every bridge in Bannock County, Idaho

128 inventoried bridges, busiest first

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled

BridgeBuiltVehicles/dayCondition
US 91 ;quinn Rd. over Uprr;quinn Road Op198622,500Good
I 15 Nbl over I 86 WB Ramp202319,250Good
I 15 Sbl over I 86 EB Ramp202419,250Good
I 15 Sbl over I 86 WB Ramp202419,250Good
I 15 Sbl over STP7041;CHUBBUCK Road202419,250Good
I 15 Nbl over I 15B;POCATELLO Creek Ic199919,000Fair
I 15 Sbl over I 15B;POCATELLO Creek Ic199819,000Fair
I 15 Nbl over Fort Hall Main Canal196014,250Fair
I 15 Nbl over Private Rd.;machine Pass195914,250Fair
I 15 Nbl over Private Rd.;machine Pass195914,250Good
I 15 Sbl over Fort Hall Main Canal196014,250Fair
I 15 Sbl over Private Rd.;machine Pass195914,250Fair
I 15 Sbl over Private Rd.;machine Pass195914,250Good
I 15 Nbl over Barton Rd.gs196413,250Fair
I 15 Nbl over Sma 7461;E. Terry St196413,250Fair
I 15 Nbl over Stp 7341; Center St. Ic.200713,250Good
I 15 Sbl over Barton Rd.gs196413,250Fair
I 15 Sbl over Sma 7461;E. Terry St196413,250Fair
I 15 Sbl over Stp 7341; Center St. Ic.200713,250Fair
I 15 Nbl & Sbl over Marsh Creek197112,000Fair
I 15 Nbl over STP7041;CHUBBUCK Road202311,750Good
I 86 Ebl over Hiline Road Gs200911,750Fair
I 86 Ebl over Uprr;chubbuck Overpass196311,750Fair
I 86 Wbl over Hiline Road Gs201011,750Good
I 86 Wbl over Uprr;chubbuck Overpass202311,750Good
Stp 7181;GOULD St over First Ave;gould St Op198211,000Fair
Stp 7181;GOULD St over Harrison Ave;gould St Op198211,000Fair
Stp 7181;GOULD St over Uprr;gould St Op198211,000Fair
I 15 Nbl over I 15B;S.POCATELLO Ic196510,000Fair
I 15 Nbl over Sma 5697;SOUTH Valley Rd201510,000Good
I 15 Sbl over I 15B;S.POCATELLO Ic196510,000Fair
I 15 Sbl over Sma 5697;SOUTH Valley Rd201510,000Good
Stp 7151;BENTON St over S.1ST Ave;uprr;benton Op196710,000Fair
I 15 Nbl over Blackrock Rd.gs19659,750Fair
I 15 Nbl over I 86 EB Ramp20239,750Good
I 15 Nbl over Stc 1762;PORTNEUF Rd Ic19639,750Fair
I 15 Sbl over Blackrock Rd.gs19659,750Fair
I 15 Sbl over Stc 1762;PORTNEUF Rd Ic19639,750Fair
US 91 Nbl over I 86 Eb-wb; Chubbuck Ic20139,750Good
US 91 Sbl over I 86 Eb-wb; Chubbuck Ic20139,750Good
Stp 7151;N Main St over Portneuf River19579,600Fair
Stp 7151;N Main St over Portneuf River19579,600Fair
Olympus Dr over Future Ped Underpass20188,400Good
I 15 Nbl over I 15B;S.INKOM Ic19628,000Fair
I 15 Nbl over Portneuf River19638,000Fair
I 15 Nbl over Stc 1758;UPRR;INKOM Op19638,000Fair
I 15 Sbl over I 15B;S.INKOM Ic19628,000Fair
I 15 Sbl over Portneuf River19638,000Fair
I 15 Sbl over Stc 1758;UPRR;INKOM Op19638,000Fair
I 15 Nbl over I 15B;W.INKOM Ic19627,750Poor
I 15 Nbl over Main Street Gs19627,750Poor
I 15 Nbl over Rapid Creek;inkom19637,750Fair
I 15 Sbl over I 15B;W.INKOM Ic19627,750Fair
I 15 Sbl over Main Street Gs19627,750Poor
I 15 Sbl over Rapid Creek;inkom19637,750Fair
Philbin Road over I 86 Eb-wb;philbin Rd Gs19687,000Fair
I 86 Ebl over Sma 7031;HAWTHORNE Rd.gs19686,750Fair
I 86 Wbl over Sma 7031;HAWTHORNE Rd.gs19686,750Fair
I 15 Nbl over Stc 1755; Arimo Rd.ic20226,500Good
I 15 Sbl over Stc 1755;ARIMO Rd.ic20226,500Good
S7241;NRTHGTE Pkwy over I 15 Nb-sb;northgate Ic20206,500Good
Stp 7391;S. Main over Portneuf River19676,500Fair
I 15 Nbl over Robin Rd Gs19646,250Good
I 15 Sbl over Robin Rd Gs19646,250Good
I 15 Nbl over Marsh Valley Road19716,000Fair
I 15 Nbl over SH 40;DOWNEY Ic19716,000Fair
I 15 Nbl over Woodland Rd.gs19716,000Fair
I 15 Sbl over Marsh Valley Road19716,000Fair
I 15 Sbl over SH 40;DOWNEY Ic19716,000Fair
I 15 Sbl over Woodland Rd.gs19716,000Fair
US 30 over Portneuf River20115,700Good
US 30 over Portneuf River20115,700Fair
US 30 over Portneuf River20085,700Good
US 30 over UPRR & Canal; Topaz Op20115,700Fair
I 15B;MERRILL Road over I 15;N. Mccammon Ic20125,300Good
US 30 over Portneuf River20005,300Good
SMA7217;S. Valley over Ami Trail20165,200Good
SMA7217;S. Valley over S 2ND;PORTNEUF R;uprr20165,200Good
US 30 over Portneuf River;mccammon19634,700Fair
US 30 over Uprr;n.mccammon Op19634,700Fair
STC7221;CARSON St over Portneuf River20234,600Good
US 91 over Tyhee Wasteway Canal19254,600Fair
Stc 7261;CUSTER St over Portneuf River19534,500Fair
US 30 over Deer Crossing19774,300Fair
US 30 over Deer Crossing19774,300Fair
US 30 over Deer Crossing19764,300Fair
US 30 over Portneuf River19774,300Fair
I86 EB Off Ramp over Ramp EN OVER RAMP NW20243,700Good
I86 EB Off Ramp over Ramp En over Ramp NW20243,700Good
Center Street over Portneuf River19682,850Fair
STC7151;BENTON St over Portneuf River19692,800Poor
Ross Fork Rd over I 15 Nb-sb; Fort Hall Ic20232,600Good
Lewis Street over Portneuf River20172,500Good
US 30B over Portneuf River;in Lava19622,500Fair
Monte Vista Drive over I 15;MONTE Vista Dr Gs19972,200Good
STC7301;FREMONT St over Portneuf River19682,200Fair
STC1762;PRTNEUF Rd over Portneuf R;ft Hall Mine19832,000Fair
US 91 over Uprr;redrock Overpass19951,600Good
US 91 over I 15 Nb-sb;virginia Ic19711,500Fair
STC1727;PHILBIN over Tyhee Lateral Canal19491,400Good
Stc 1760; Main St over Rapid Creek20151,300Good
Stc 1757;MAIN St over Portneuf River19621,200Poor
Stc 1764; Park St. over Portneuf River19401,100Fair
I 15B;JENSEN Road over I 15 Sb-nb;mccammon Ic1964740Fair
Stc 1759; Blazer over Portneuf River2009690Good
Irr Bia Rte 152 over Portneuf River1960600Fair
2-1/2 Mile Road over Fort Hall Main Canal2011500Good
Ft Hall Main Cnl over Harvest Spg Blvd2022500Good
Clark Street over Portneuf River1998400Fair
Old Malad Hwy over Marsh Creek2018340Good
Treasure Lane over Marsh Creek1970260Fair
E. Virginia Road over Marsh Creek1959150Fair
12TH Street over Portneuf River2005108Good
Bowman Road over I 15 Nb-sb;bowman Rd.gs1971100Fair
N Kraft Road over Portneuf River1945100Fair
S. Raymond Road over Portneuf Marsh Vally Cnl2019100Good
Sage Hollow over Fort Hall Main Canal1980100Fair
W Blackrock Road over Portneuf R;nw.inkom Br1948100Fair
W. Lincoln Ave over Rapid Creek1997100Fair
Smith Canyon Road over Portneuf Marsh Val Cnl200580Good
Irr Bia Rte 68 over Spring Creek197560Fair
2-1/2 Mile Road over I 15;2-1/2 Mile Road Gs195950Good
Arkansas Road over Portneuf Marsh Val.cnl195750Fair
E. Sublette Road over Portneuf Marsh Val.cnl196850Poor
Irr Bia Rte 68 over Big Jimmey Creek201435Good
Broxon Road over Portneuf River198630Good
Symons Road over Portneuf River198630Good
Cottonwood Road over Cottonwood Creek197510Fair

Source: FHWA National Bridge Inventory, 2025.

Bannock County bridge conditions · Idaho bridges by county.

Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.