Canyon County, ID

77 public highway bridges

Canyon County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Canyon County, Idaho contains 77 public highway bridges. Roughly 22.1% are rated “Good,” 66.2% “Fair,” and 1.3% “Poor.” Poor means the lowest applicable deck, superstructure, substructure, or culvert rating is 4 or below on the 0–9 NBI scale. It is a condition category, not a live safety or closure decision.

Responsible agencies inspect covered bridges on risk-based intervals under current NBIS rules and submit inventory data to FHWA annually. The list below shows every NBI-tracked bridge in the county. Use the “Sort by” controls to change the ordering, and click any row for its reported inspection date, traffic count, and condition fields.

Source: FHWA National Bridge Inventory. See methodology for full definitions.

77
Total Bridges
22.1%
Good
66.2%
Fair
1.3%
Poor Condition

Condition Distribution

Good
22.1% (17)
Fair
66.2% (51)
Poor
1.3% (1)

All Bridges (77)

STC 3724;HOMEDALE

Fair

Over: GOLDEN GATE LOW LINE CNL

7.9 E. HOMEDALE, Canyon, ID

Built 1991 Load: 35.4 t ADT: 2,500

STC8317;LANSING RD

Fair

Over: CANYON CANAL

2.4 E. MIDDLETON, Canyon, ID

Built 2003 Load: 35.4 t ADT: 2,700

STC 3763;MARKET RD

Fair

Over: FARMERS COOP SEBREE CNL

0.7 S. 3.2 E. PARMA, Canyon, ID

Built 1990 Load: 37.2 t ADT: 640

STC3717;FRIENDS RD

Fair

Over: GOLDEN GATE CANAL

1.1 S. 4.5 E. WILDER, Canyon, ID

Built 1967 Load: 37.2 t ADT: 480

STC3717;FRIENDS RD

Fair

Over: DEER FLAT LOW LINE CANAL

1.9 S. 4.5 E. WILDER, Canyon, ID

Built 1961 Load: 38.1 t ADT: 480

BATT CORNER ROAD

Fair

Over: RIVERSIDE CANAL

3.7 S. 1.3 E. PARMA, Canyon, ID

Built 1997 Load: 40.8 t ADT: 400

CHISHOLM DRIVE

Fair

Over: PHYLLIS CANAL

1.4 N. 0.2 E. NAMPA, Canyon, ID

Built 1996 Load: 40.8 t ADT: 5

S. FLORIDA

Fair

Over: PHYLLIS CANAL

4.2 S. 1.2 E. CALDWELL, Canyon, ID

Built 2001 Load: 56.2 t ADT: 2,600

E. STAGE COACH RD

Fair

Over: MORA CANAL

4.5 N. 0.5 W. MELBA, Canyon, ID

Built 2004 Load: 84.4 t ADT: 200

TOWN CIRCLE ROAD

Good

Over: SEBREE CANAL

2.7 S. 5.4 E. NOTUS, Canyon, ID

Built 1980 Load: 27.2 t ADT: 400

FROST ROAD

Good

Over: LOW LINE CANAL

5.2 S. 5.5 E. WILDER, Canyon, ID

Built 1990 Load: 27.9 t ADT: 50

STC 3747;LAKESHORE

Good

Over: NEW YORK CANAL

4.7S 0.9W NAMPA CITY CTR, Canyon, ID

Built 1986 Load: 28.1 t ADT: 3,600

SUGAR AVENUE

Good

Over: INDIAN CREEK

IN NAMPA, Canyon, ID

Built 2004 Load: 28.1 t ADT: 190

S. 4TH AVENUE

Good

Over: INDIAN CREEK

IN CALDWELL; S 4TH AVE, Canyon, ID

Built 2023 Load: 32.7 t ADT: 470

I 84 EBL

Good

Over: PHYLLIS CANAL

IN NAMPA, Canyon, ID

Built 2012 Load: 33.4 t ADT: 52,750

FARNER ROAD

Good

Over: MORA CANAL

3.5 S. 6.6 W. NAMPA, Canyon, ID

Built 2003 Load: 34.5 t ADT: 50

SABIN ROAD

Good

Over: FARMERS COOP SEBREE CNL

2.7 E. PARMA, Canyon, ID

Built 1985 Load: 35.4 t ADT: 90

GEORGIA AVE

Good

Over: WILSON DRAIN

IN CALDWELL, Canyon, ID

Built 2005 Load: 36.3 t ADT: 80

I 84 EBL & WBL

Good

Over: UPRR;EAST LATERAL CANAL

AT NAMPA WCL, Canyon, ID

Built 2021 Load: 36.6 t ADT: 96,000

I 84 WBL

Good

Over: PHYLLIS CANAL

IN NAMPA, Canyon, ID

Built 2012 Load: 37.2 t ADT: 52,750

I 84 EBL

Good

Over: UPRR

IN NAMPA NCL, Canyon, ID

Built 2011 Load: 38.1 t ADT: 52,750

I 84 WBL

Good

Over: UPRR

IN NAMPA NCL, Canyon, ID

Built 2011 Load: 38.1 t ADT: 52,750

CAN-ADA ROAD

Good

Over: WALDVOGEL CANAL

0.3 S. 0.9 E. MELBA, Canyon, ID

Built 2007 Load: 38.1 t ADT: 300

NOTUS CANAL

Good

Over: I84 EBL WBL

IN CALDWELL, Canyon, ID

Built 2022 Load: 38.9 t ADT: 67,500

STC3753;LONE STAR

Good

Over: CALDWELL CANAL

6.0 S 1.4 E CALDWELL, Canyon, ID

Built 2010 Load: 46.3 t ADT: 710

STC8533;SMITH AVE

Good

Over: PHYLLIS CANAL

0.3 N 3.2 W NAMPA, Canyon, ID

Built 2010 Load: 55.3 t ADT: 590

ROSE GARDEN RD

Poor

Over: NOTUS CANAL

CALDWELL;ROSE GARDEN RD, Canyon, ID

Built 1935 Load: 10.9 t ADT: 600

Read our methodology - how this data is sourced, computed, and verified.

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Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges

Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.