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Every bridge in Canyon County, Idaho

291 inventoried bridges, busiest first

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled

BridgeBuiltVehicles/dayCondition
I 84 Wbl & Ebl over I 84B ;garrity Blvd Ic2011111,000Good
I 84 Ebl & Wbl over Uprr;east Lateral Canal2021104,000Good
I 84 Ebl Wbl over Northside Blvd Ic202184,500Good
I 84 Ebl Wbl over Sma 7923; Linden Road Gs202268,000Good
I84 Ebl Wbl over Notus Canal202268,000Good
I 84 ;US 20-26 over Stp 7773;10TH Ave Ic198358,000Fair
I 84 Ebl over Phyllis Canal201255,500Good
I 84 Ebl over UPRR201155,500Good
I 84 Wbl over Phyllis Canal201255,500Good
I 84 Wbl over UPRR201155,500Good
I 84 ;US 20-26 over Boise River;caldwell Br.198353,500Fair
I 84 over Farmers Sebree Canal198053,500Fair
SH 55 over UPRR200649,000Good
SH 44 over Willow Creek195336,000Fair
SH 55 over I 84;karcher-midland Ic200636,000Good
SH 55 over Indian Creek200636,000Good
SH 44 over I 84 Eb-wb;middleton Ic196433,500Fair
SH 44 over Canyon Creek195632,000Fair
STC8223;NORTHSIDE over Indian Creek196831,500Good
Sand Hollow Road over I 84;SAND Hollow Rd Gs196230,500Fair
STC8223;NORTHSIDE over Uprr;nampa RR Overpass196829,000Fair
I 84B over Indian Creek195126,500Fair
I 84B;CENTENNIAL W over Uprr;indian Cr;caldwell198326,000Fair
SMA8513;ID Cntr Rd over Phyllis Canal198726,000Fair
SH 55 over Elijah Drain197325,000Fair
SH 55 over Wilson Drain197325,000Fair
STP8393;FRANKLIN B over I 84;FRANKLIN Blvd Ic200024,500Fair
I 84B over Phyllis Canal197023,000Good
I 84 Ebl over Notus Canal196422,750Good
Front Street over I 84B;NAMPA 11TH Ave UP200322,500Good
STP7933;FRANKLIN R over Notus Canal200922,000Good
STP8393;FRANKLIN B over Phyllis Canal196322,000Fair
SMA8353;16TH Ave N over Indian Creek196920,000Fair
SMA8353;16TH Ave over UPRR;1ST St N196920,000Fair
Nhs 7773;10TH Ave over City St;uprr;caldwell Op195619,500Poor
SH 55 over Deer Flat Canal197319,500Fair
SH 55 over Phyllis Canal197319,500Good
Sma 8383;LONE Star over Phyllis Canal197319,000Fair
US 20; Franklin Rd over I 84;FRANKLIN Rd Ic200819,000Good
STP8393;FRANKLIN B over Phyllis Canal196318,500Fair
STP8393;FRANKLIN B over Phyllis Canal196318,500Fair
I 84B over I 84;NW Caldwell Ic198318,000Fair
US 20 over High Line Canal194716,000Good
US 20 over Soloman Drain202316,000Good
I 84 Ebl over Purple Sage Gs196215,500Fair
I 84 Ebl over Sand Hollow Creek196215,500Fair
I 84 Wbl over Purple Sage Gs196215,500Fair
I 84 Wbl over Sand Hollow Creek196215,500Fair
I 84 on Ramp over Indian Creek200615,500Fair
Sma 7773;10TH Ave over Indian Creek202015,500Good
Stp 7933;21ST Ave over Indian Creek200915,500Good
US 20 over Fifteen Mile Creek194715,500Fair
US 20 over Mason Drain Ditch194714,500Fair
STP8423;AMITY Ave over Uprr;amity Ave Op200713,500Good
Birch Lane over Phyllis Canal200012,000Fair
Sma 7923;LINDEN Rd over Notus Canal196812,000Fair
Stc 8223;KARCHER R over I 84;KARCHER Road Gs201911,500Good
STC7983; Ustick Rd over Notus Canal202311,000Good
Stc 3750;MIDDLETON over Boise River200411,000Good
Stc 3750;MIDDLETON over Fifteen Mile Creek200411,000Good
Stc 7983;USTICK Rd over I 84 Ebl Wbl202211,000Good
US 20 over Farmers Coop Canal196411,000Fair
Sma 8213;MIDDLETON over Elija Drain197010,500Fair
Stc 7819;KINGS Rd over Uprr;kings Rd Op200610,500Good
SH 55 over Low Line Canal197410,000Fair
SH 45 over New York Canal19619,300Fair
Stp 8213;MIDDLETON over Caldwell Highline Canal19508,900Fair
Stp 8213;MIDDLETON over I 84; Middleton Rd. Gs20218,900Good
Stc 7859;ROBINSON over I 84; Robinson Rd Gs20098,600Fair
US 95 over Farmers Coop Canal19928,400Good
Sma 8233;MIDLAND B over Phyllis Canal19738,300Fair
7TH Ave N. over Indian Creek19788,000Good
SH 55 over High Line Canal19747,700Fair
SH 55 over Low Line Canal20077,700Good
I 84 Off Ramp over Drainage Run Off20067,500Good
US 95 over Golden Gate Canal19567,200Fair
Sma 8523;CHERRY Ln over Phyllis Canal19767,100Fair
Linden Road over Mason Creek19747,000Fair
SH 19 over Golden Gate Canal19766,700Good
Stc 8423;LK Lowell over Deer Flat Nampa Canal19926,500Fair
US 20 over I 84 Eb-wb;parma Ic19646,500Fair
STP7713;FARMWAY Rd over Phyllis Canal19676,200Fair
6TH Street North over Phyllis Canal20005,400Good
Blaine St over Old Indian Creek Channel19665,400Poor
Blaine St over Old Indian Creek Channel19715,400Fair
Stc 8483;DAVIS Ave over Phyllis Canal19715,400Fair
Stc 8433;11TH Ave over Phyllis CNL;11TH Ave Ext19945,300Fair
US 20 26;FAP 21SPR over Snake River;nyssa Bridge19575,300Fair
SMA3343;LOCUST Ln over New York Canal19735,200Fair
I 84 EB Off Ramp over Boise River;ramp Ab Br19805,000Fair
I 84 WB on Ramp over Boise River;ramp Da Br19805,000Fair
Stc 3734;LAKE Ave over Phyllis Canal19955,000Fair
STC8373;CANYON St. over Phyllis Canal20034,600Good
Nhs 3761;NORTHSIDE over Fifteen Mile Creek19704,300Fair
Nhs 3761;NORTHSIDE over High Line Canal19704,300Fair
Stc 8433; 11TH Ave over I 84;11TH Ave N. Gs20104,200Good
SMA8443;VICTORY Rd over Ridenbaugh Canal19804,100Fair
SH 45 over Mora Canal19564,000Fair
US 95 over Boise River19613,900Fair
US 95 over Riverside Canal19643,900Fair
US 95 over Sand Hollow Creek20173,900Good
US 95 over US20;UPRR;US 20-95 Ic20173,900Good
STC7853;N.ILLINOIS over Notus Canal19773,800Fair
Stc 3747;LAKESHORE over New York Canal19863,700Fair
Linden Road over Fifteen Mile Creek20133,400Good
Stc 7863;s.5th Ave over Indian Creek19353,100Fair
Stc 8317;DUFF Lane over Canyon Canal19563,100Fair
Stc 8317;DUFF Lane over Mill Slough19573,100Fair
S. Florida over Phyllis Canal20012,800Fair
STC3762;GREENHURST over New York Canal19722,800Fair
Stc 3740;NOTUS Rd over Boise River;notus Bridge19962,800Fair
STC3742;WAMSTAD Rd over Boise River19752,700Fair
Stc 3724;HOMEDALE over Golden Gate Low Line Cnl19912,500Fair
Stc 3740;NOTUS Rd over Riverside Canal19402,500Fair
SMA8323;SOUTH Side over New York Canal19772,400Fair
STC8317;LANSING Rd over Canyon Canal20032,400Fair
STC8317;LANSING Rd over Mill Slough19952,400Fair
STC8317;LANSING Rd over Willow Creek19892,400Fair
1ST Street North over Phyllis Canal19782,300Fair
SMA7808;MIDDLETON over Mill Slough19992,300Fair
Stc 3723;ROBINSON over New York Canal19812,300Fair
Lewis Lane over New York Canal19842,100Fair
Oasis Road over I 84;SAND Hollow Ic20182,100Good
SMA7743;OLD Hwy 30 over Notus Canal19932,100Fair
Stc 7787;PLYMOUTH over Boise River & Canal19222,100Poor
Stc 7787;PLYMOUTH over Riverside Canal19302,100Fair
SMA8133;HWY 44 Ext over Notus Canal20182,000Good
STC3718;PRPLE Sage over Willow Creek19752,000Fair
Sma 7733;KIMBALL A over Indian Creek19332,000Poor
Stc 3717;USTICK Rd over Lowline Canal19952,000Good
Moss Lane over Phyllis Canal20051,800Good
STC7817;CONCORD St over Willow Creek19871,800Good
9TH Ave N. over Indian Creek19801,700Good
S7993;AVIATION Way over Canyon Hill Lateral20091,700Fair
STC3725;LAKE Shore over Deer Flat High Line Cnl20171,700Good
STC7158;COMMERCIAL over Notus Canal20101,500Good
STC7165;FARMWAY Rd over Farmers Coop Sebree Cnl19991,500Fair
STC7165;LABOR Camp over Notus Canal19851,500Fair
STC3747;W Locust L over Deer Flat High Line Cnl19971,400Fair
STC3755;SOUTHSIDE over Mora Canal19751,400Fair
Sunny Lane over Phyllis Canal19741,300Fair
SMA3748;USTICK Rd over Deer Flat Canal19981,200Good
Sma 3723;ROBINSON over Mora Canal19841,200Fair
Stc 3725;MISSOURI over Mora Canal19841,200Fair
10TH Ave N. over Indian Creek19731,100Fair
Pride Lane over Golden Gate Low Line Cnl19561,100Fair
SMA3343;LOCUST Ln over New York Canal19881,100Fair
Chicago St. over Boise River19801,000Fair
STC3866;BOISE R Rd over Dixie Slough20101,000Good
STC3730;MARSING Rd over Mora Canal2004980Good
Stc 3730;RIVERSIDE over Deer Flat High Line Cnl1986980Fair
Stc 3759;RIVERSIDE over Mora Canal2024980Good
S. 11TH Avenue over Indian Creek2009968Good
Stc 3869;CONWAY Rd over Farmers Coop Sebree Cnl1976960Fair
STC7808;MIDDLETON over Willow Creek1978950Fair
STC3756;DEER Flat over High Line Canal1990940Fair
STC3756;DEER Flat over High Line Canal1991940Fair
Stc 3763;MARKET Rd over Farmers Coop Sebree Cnl1990830Fair
17TH Avenue North over Indian Creek2001800Fair
1ST Ave North over Indian Creek2002800Good
2ND Ave N over Indian Creek1976800Fair
S. 9TH Avenue over Indian Creek1968750Fair
Stc 8317;DUFF Lane over Willow Creek1983750Poor
STC3753;LONE Star over Caldwell Canal2010720Good
STC7839;HAPPY Vall over New York Canal2004670Fair
Power Line Road over New York Canal1919660Fair
STC3742;WAMSTAD Rd over Riverside Canal1969650Fair
STC3841;WEITZ Rd over West End Drain1962650Fair
STC8533;SMITH Ave over Phyllis Canal2010620Good
Smith Avenue over Phyllis Canal1971620Fair
Smith Avenue over Wilson Drain1970620Fair
Marsing Road over Deer Flat High Line Cnl2003570Good
S3786;CHCKEN Dinnr over Low Line Canal1965570Fair
S. 12TH Avenue over Indian Creek1935560Fair
Stc 3851;HEXON Rd over Boise River1954560Poor
Lake Shore over Ridenbaugh Canal2005500Good
STC3717;FRIENDS Rd over Deer Flat Low Line Canal1961500Fair
STC3717;FRIENDS Rd over Golden Gate Canal1967500Fair
S. 4TH Avenue over Indian Creek2023470Good
S. Dewey Ave over Mill Slough1980440Fair
SMA3735;PRPLE Sage over Sebree Canal1982440Fair
Stc 3822;GOTSCH Rd over Farmers Coop Sebree Cnl1972430Fair
STC3738;SHELTON Rd over Farmers Coop Sebree Cnl1975420Fair
STC3798;PECKHAM Rd over Golden Gate Canal1990420Fair
Batt Corner Road over Riverside Canal1997410Fair
Galloway Road over I 84;GALLOWAY Road Gs1962410Fair
STC3780;W Galloway over Notus Canal1969410Good
Town Circle Road over Sebree Canal1980400Good
S3792;UPPR Pleasnt over Deer Flat Canal1950370Fair
S3792;UPPR Pleasnt over Deer Flat Canal1989370Fair
S3792;UPPR Pleasnt over Deer Flat Canal1997370Fair
SMA3735;PRPLE Sage over Notus Canal1965370Fair
Burden Road over Farmers Coop Sebree Cnl1977360Fair
Sma 3686;JOPLIN Rd over High Line Canal1981350Fair
Stc 3725;PERCH Rd over Mora Canal1982350Fair
Malt Road over Deer Flat Highline Cnl1981330Fair
Stc 3782;MALT Rd over Low Line Canal1998330Fair
N. Park Drive over Phyllis Canal1977320Fair
Stc 3896;WALKER Rd over Farmers Coop Sebree Cnl1969320Fair
Cool Road over Mora Canal1995310Fair
Can-ada Road over Mora Canal1992300Fair
Can-ada Road over Waldvogel Canal2007300Good
Emerald Road over Deer Flat High Line Cnl1988300Fair
Johnson Lane over Indian Creek2001300Good
Roswell Road over Riverside Canal1985300Fair
SMA3340;MCDERMMOTT over Ridenbaugh High Line Cnl1987300Fair
Stc 3031;FARGO Rd over Golden Gate Canal1991290Fair
Can-ada Road over Waldvogel Canal1980280Fair
E. Simplot Blvd. over Indian Creek1965280Fair
S3792;UPPR Pleasnt over Deer Flat Low Line Canal1950280Fair
S3792;UPPR Pleasnt over Golden Gate Canal1950280Fair
Stc 3851;HEXON Rd over Mcconnell Island Ditch1993280Fair
STC3756;DEER Flat over Mora Canal2006260Good
Pebble Lane over Riverside Canal1977250Fair
Rudd Road over Riverside Canal2000250Fair
Stc 3905;WAGNER Rd over Farmers Coop Sebree Cnl1979250Fair
Allendale Rd over Deer Flat Low Line Canal2024240Good
STC3790;ALLENDALE over Low Line Canal1998240Fair
Stc 3790;ALLENDALE over Golden Gate Canal1992240Fair
Kit Avenue over Riverside Canal1994230Fair
Stc 3874;STAFFORD over Farmers Coop Sebree Cnl1976230Fair
Stc 3874;STAFFORD over Notus Canal2022230Good
STC8315;LINCOLN Rd over Fifteen Mile Creek2005220Good
Stc 3839;BATT Crnr over Golden Gate Canal2000220Fair
Boise Street over Mill Slough1981200Fair
Dip Lane over Farmers Coop Canal1979200Fair
E. Stage Coach Rd over East Madden Lateral2019200Good
E. Stage Coach Rd over Mora Canal2004200Fair
Moreno Drive over Deer Flat Caldwell Canal2006200Good
Notus Road over Farmers Coop Sebree Cnl1967200Fair
Stephen Lane over Riverside Canal1983200Fair
Track Road over Mora Canal1983200Fair
Sugar Avenue over Indian Creek2004190Good
Eel Lane over Lawrence Kennedy Canal1974180Fair
Stc 3875;TEN Davis over Farmers Coop Sebree Cnl1954180Fair
Rodeo Lane over Golden Gate Canal2002170Fair
STC3025;RODEO Lane over Riverside Canal1995170Fair
E Lekeitio Vill Dr over Phyllis Canal2024150Good
Pecan Lane over Deer Flat Highline Cnl1990140Good
Power Line Road over Mora Canal1987140Fair
Opal Lane over Riverside Canal1974120Fair
Rim Road over Deer Flat High Line2013120Good
Rim Road over Mora Canal1995120Fair
Baseline Road over Waldvogel Canal2004110Fair
STC3868;IVERSON Rd over Farmers Coop Sebree Cnl1971110Fair
Beet Road over Low Line Canal1992100Fair
Fountain Road over Sebree Canal1994100Fair
Gotsch Road over D Line Canal1974100Fair
Lynwood Road over High Line Canal1974100Fair
N. Kneckinger Ave over Ten Mile Creek2024100Good
Sand Road over Sand Hollow CR1963100Good
Sand Road over Sand Run Gulch1967100Fair
Sand Road over Sand Run Gulch1969100Fair
Hop Road over Farmers Coop Sebree Cnl198690Fair
Lewis Lane over Mora Canal200590Good
Lynwood Road over Mora Canal199890Fair
Old Fort Boise Rd. over D Line Canal198490Fair
Parma Road over D Line Canal197190Fair
Sabin Road over Farmers Coop Sebree Cnl198590Good
Walker Lake Road over High Line Canal196790Fair
Georgia Ave over Wilson Drain200580Good
Low Pleasant Rd over Golden Gate Canal199480Fair
STC3742;WAMSTAD Rd over Golden Gate Canal199380Good
Van Slyke Road over Golden Gate Canal199480Fair
Dry Lake Road over Mora Canal198770Fair
Hollow Road over C Line West Canal198570Fair
Knot Lane over High Line Canal199570Fair
Tucker Road over Golden Gate Canal196570Fair
Tucker Road over Low Line Canal199770Fair
Bluff Lane over Riverside Canal198550Fair
Duck Lane over Mora Canal198350Fair
Farner Road over Mora Canal200350Good
Frost Road over Low Line Canal199050Good
Green Road over Farmers Coop Sebree Cnl193950Fair
Hollow Road over C Line East Canal197750Fair
Lonkey Lane over Lowline Canal199650Fair
S. Cemetery Road over Mill Slough202150Good
Sand Hollow Road over Canal197050Fair
Sharp Lane over Sand Run Gulch197540Fair
Travis Road over Golden Gate Canal199040Fair
Van Slyke Road over Deer Flat Canal199230Fair
Boehner Road over Deer Flat Canal199325Fair
Mink Road over Notus Canal197525Fair
S. Cemetery Road over Willow Creek202125Good
14TH Ave over Notus Canal198020Good
Broadmore Way over Indian Creek194820Fair
Fern Lane over Golden Gate Canal197020Fair
Penny Lane over Golden Gate Canal193520Fair
Tucker Road over Dixie Slough199020Fair
Tucker Road over Riverside Canal199920Fair
Chisholm Drive over Phyllis Canal19965Fair

Source: FHWA National Bridge Inventory, 2025.

Canyon County bridge conditions · Idaho bridges by county.

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