Jefferson County, ID

55 public highway bridges

Jefferson County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Jefferson County, Idaho contains 55 public highway bridges. Roughly 20% are rated “Good,” 69.1% “Fair,” and 3.6% “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.

55
Total Bridges
20%
Good
69.1%
Fair
3.6%
Poor Condition

Condition Distribution

Good
20% (11)
Fair
69.1% (38)
Poor
3.6% (2)

All Bridges (55)

US 20B

Unknown

Over: US 20 NB-SB;S.RIGBY IC

0.5 S. RIGBY, Jefferson, ID

Built 1976 ADT: 20,000

DIAMOND ROAD

Unknown

Over: I 15 NB-SB;DIAMOND RD.GS

1.8 N. ROBERTS, Jefferson, ID

Built 1968 ADT: 5,800

E 1900 N

Unknown

Over: I 15 NB-SB;E 1900 N GS

1.8 S. HAMER, Jefferson, ID

Built 1960 ADT: 4,700

CAMAS CREEK ROAD

Unknown

Over: I 15 NB-SB;HAMER IC

AT HAMER, Jefferson, ID

Built 1960 ADT: 4,700

WEST CAMAS ROAD

Fair

Over: CAMAS CREEK

0.7 MI. W OF HDQTRS, Jefferson, ID

Built 1940 Load: 14.5 t ADT: 5

N 4950 E

Fair

Over: DRY BED SNAKE RIVER

1.0 N. 3.1 E. RIRIE, Jefferson, ID

Built 1968 Load: 16.3 t ADT: 550

2ND EAST STREET

Fair

Over: ANDERSON CANAL

IN RIRIE;2ND E.ST, Jefferson, ID

Built 1968 Load: 16.3 t ADT: 180

N 2375 E (CAL IDA)

Fair

Over: CAMAS CREEK;S.CAMAS BR

0.5 S. CAMAS, Jefferson, ID

Built 1972 Load: 16.3 t ADT: 40

E 100 N RD

Fair

Over: BURGESS CANAL

3.0 S. 0.2 W. LEWISVILLE, Jefferson, ID

Built 1970 Load: 19.8 t ADT: 310

N 4950 E

Fair

Over: FARMERS FRIEND CANAL

0.4 N. 3.1 E. RIRIE, Jefferson, ID

Built 1950 Load: 20.0 t ADT: 550

E 300 N

Fair

Over: DRYBED CANAL;E.GROVER BR

5.6 E. RIGBY, Jefferson, ID

Built 1977 Load: 20.9 t ADT: 380

550 WEST ROAD

Fair

Over: LONG ISLAND CANAL

0.2 N. 0.9 W. LABELLE, Jefferson, ID

Built 1973 Load: 20.9 t ADT: 40

N 4100 E

Fair

Over: LEWISVILLE CANAL

1.0 N. 1.6 E. RIGBY, Jefferson, ID

Built 1969 Load: 20.9 t ADT: 1,600

MAIN DIVERSION RD

Fair

Over: CAMAS CREEK

1.3 MI. NE OF HDQTRS, Jefferson, ID

Built 1975 Load: 20.9 t ADT: 2

N 4950 E

Fair

Over: EAGLE ROCK CANAL

0.2 N. 3.1 E. RIRIE, Jefferson, ID

Built 1950 Load: 21.8 t ADT: 550

STC 6731;55TH EAST

Fair

Over: HARRISON CANAL

2.3 N. 2 E. UCON, Jefferson, ID

Built 1961 Load: 22.7 t ADT: 3,900

N 1300 E RD(BYRNE)

Fair

Over: OWSLEY CANAL;S TERRETON

0.9 S. TERRETON, Jefferson, ID

Built 1976 Load: 23.4 t ADT: 40

STC 6768;N 4700 E

Fair

Over: FARMERS FRIEND CANAL

0.5 E. 0.7 N. RIRIE, Jefferson, ID

Built 1950 Load: 23.6 t ADT: 2,200

NORTH 4825 EAST

Fair

Over: ENTERPRISE CANAL

0.8 N. 1.8 E. RIRIE, Jefferson, ID

Built 1970 Load: 24.3 t ADT: 80

105TH EAST RD

Fair

Over: HARRISON CANAL

0.3 N. 2.4 W. RIRIE, Jefferson, ID

Built 1974 Load: 24.3 t ADT: 90

N 1800 E RD

Fair

Over: CAMAS CREEK

2.9 N. 5.0 E. TERRETON, Jefferson, ID

Built 1969 Load: 24.3 t ADT: 200

N 3600 E RD (HITT)

Fair

Over: DRY BED CR;NE.LEWISVILLE

0.9 N. 1.5 E. LEWISVILLE, Jefferson, ID

Built 1967 Load: 24.3 t ADT: 30

RAYS LAKE ROAD

Fair

Over: CAMAS CREEK

4.3 MI. SSW OF HDQTRS, Jefferson, ID

Built 1939 Load: 24.3 t ADT: 5

N 1200 E RD

Fair

Over: OWSLEY CNL;SW.TERRETON

0.9 S. 1.0 W. TERRETON, Jefferson, ID

Built 1974 Load: 25.2 t ADT: 40

N 5050 E

Fair

Over: SNAKE RIVER;HEISE BR

1.3 N. 4.0 E. RIRIE, Jefferson, ID

Built 1975 Load: 26.1 t ADT: 550

N 3200 E (HUNTER)

Fair

Over: DRY BED CR;W.LEWISVILLE

0.3 N. 2.6 W. LEWISVILLE, Jefferson, ID

Built 1964 Load: 26.3 t ADT: 40

N 4600 E

Fair

Over: RUDY CANAL

2.0 N. 0.4 W. RIRIE, Jefferson, ID

Built 1973 Load: 27.0 t ADT: 20

SH 48

Fair

Over: SNAKE RIVER DRY BED

0.5 N. LEWISVILLE, Jefferson, ID

Built 1980 Load: 27.2 t ADT: 1,800

E 620 N

Fair

Over: LONG ISLAND CANAL

3.2 N. 1.4 W. RIGBY, Jefferson, ID

Built 1967 Load: 27.9 t ADT: 70

STC 6709;N 4200 E

Fair

Over: DRY BED CR;S.LABELLE BR

1.0 S. 0.1 W. LABELLE, Jefferson, ID

Built 1973 Load: 27.9 t ADT: 160

N 4300 E

Fair

Over: HARRISON CANAL

0.3 N. 3.4 W. RIRIE, Jefferson, ID

Built 1973 Load: 28.1 t ADT: 60

OLD YELLOWSTONE HW

Fair

Over: BURGESS CANAL

0.5 S. 0.1 E. RIGBY, Jefferson, ID

Built 1940 Load: 28.1 t ADT: 3,600

STC6731;W 145 N

Fair

Over: IDAHO CANAL

9.3 N. 0.9 W. IDAHO FALLS, Jefferson, ID

Built 1967 Load: 29.9 t ADT: 2,600

N 4000 E

Fair

Over: BURGESS CANAL

0.5 S. 0.6 E. RIGBY, Jefferson, ID

Built 1976 Load: 32.4 t ADT: 210

SH 48

Fair

Over: MARKET LAKE CANAL

IN ROBERTS, Jefferson, ID

Built 1968 Load: 32.7 t ADT: 2,800

STC 6715(N 3400 E)

Fair

Over: DRY BED CANAL

0.3 S. MENAN, Jefferson, ID

Built 1957 Load: 32.7 t ADT: 1,100

OLD HWY 20

Fair

Over: PARKS LEWISVILLE CANAL

1.2 N. 0.8 E. RIGBY, Jefferson, ID

Built 1939 Load: 32.7 t ADT: 3,400

N YELLOWSTONE HWY

Fair

Over: DRY BED CANAL

1.7 N. 1.2 E. RIGBY, Jefferson, ID

Built 1999 Load: 39.0 t ADT: 3,400

SH 48

Fair

Over: BURGESS CANAL

6.4 E. RIGBY, Jefferson, ID

Built 1986 Load: 39.9 t ADT: 2,000

S6746;MENAN-LORENZ

Fair

Over: ISLAND CANAL

3.9 N 1.6 E RIGBY, Jefferson, ID

Built 2011 Load: 43.5 t ADT: 2,700

N YELLOWSTONE HWY

Fair

Over: DRY BED CANAL

1.8 N. 1.2 E. RIGBY, Jefferson, ID

Built 1999 Load: 71.7 t ADT: 3,400

STC6732;OLD HWY 91

Fair

Over: CAMAS CREEK

4.3 N. 1.0 W. HAMER, Jefferson, ID

Built 2001 Load: 80.7 t ADT: 280

BRINDLEY ROAD

Good

Over: CAMAS CREEK

1.9 MI. SSW OF HDQTRS, Jefferson, ID

Built 1980 Load: 14.5 t ADT: 10

STC 6743 (E 200 N)

Good

Over: MARKET LAKE CANAL

4.5 S. 0.7 E. ROBERTS, Jefferson, ID

Built 1959 Load: 18.1 t ADT: 760

N 1400 E RD (ORME)

Good

Over: OWSLEY CANAL;SE TERRETON

0.9 S. 1.0 E. TERRETON, Jefferson, ID

Built 1976 Load: 23.4 t ADT: 50

N 2900 E(HACKWART)

Good

Over: BUTTE MARKET LAKE CANAL

4.0 S. 0.2 E. ROBERTS, Jefferson, ID

Built 1975 Load: 24.3 t ADT: 30

NORTH 4850 EAST RD

Good

Over: ANDERSON CANAL

0.1 N. 2.0 E. RIRIE, Jefferson, ID

Built 1974 Load: 25.2 t ADT: 20

N 2900 E RD

Good

Over: BUTTE MARKET LAKE CANAL

1.0 N. 0.2 E. ROBERTS, Jefferson, ID

Built 1974 Load: 25.2 t ADT: 30

N 3600 E RD

Good

Over: BURGESS CANAL

1.1 S. 3.4 W. RIGBY, Jefferson, ID

Built 1967 Load: 25.2 t ADT: 290

N 3980 EAST ROAD

Good

Over: DRY BED

1.8 N. 0.3 E. RIGBY, Jefferson, ID

Built 1992 Load: 25.4 t ADT: 100

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.