Cassia County, ID

38 public highway bridges

Cassia County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Cassia County, Idaho contains 38 public highway bridges. Roughly 13.2% are rated “Good,” 76.3% “Fair,” and 0% “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.

38
Total Bridges
13.2%
Good
76.3%
Fair
0%
Poor Condition

Condition Distribution

Good
13.2% (5)
Fair
76.3% (29)
Poor
0% (0)

All Bridges (38)

I 84 WBL

Unknown

Over: SOUTHSIDE CANAL

9.4 E. BURLEY, Cassia, ID

Built 1960 ADT: 100

I 84

Unknown

Over: CO.RD.;HORSE BUTTE GS

16.6 E. BURLEY, Cassia, ID

Built 1963 ADT: 30

IDAHOME ROAD

Unknown

Over: I 84 EB-WB;IDAHOME RD GS

8.2 W. SUBLETT, Cassia, ID

Built 1967 ADT: 11,500

SUBLETT ROAD

Unknown

Over: I 84 EB-WB;SUBLETT RD IC

AT SUBLETT, Cassia, ID

Built 1967 ADT: 11,000

300 NORTH ROAD

Fair

Over: MAIN SOUTHSIDE CANAL

3.8N 1.2E DECLO;965E-300N, Cassia, ID

Built 1976 Load: 16.3 t ADT: 450

00 SOUTH ROAD

Fair

Over: MAIN SOUTHSIDE CANAL

0.8N 0.2W DECLO;830E-00S, Cassia, ID

Built 1972 Load: 16.3 t ADT: 100

500 SOUTH ROAD

Fair

Over: 'J' CANAL

5.3S 1.7W BURLEY;175W500S, Cassia, ID

Built 1970 Load: 16.3 t ADT: 100

200 SOUTH ROAD

Fair

Over: 'J' CANAL

1.0S 1.2E DECLO;970E-200S, Cassia, ID

Built 1984 Load: 18.1 t ADT: 110

W 200 SOUTH ROAD

Fair

Over: 'J' CANAL

2.3 S. 3.1 W. BURLEY, Cassia, ID

Built 1977 Load: 20.9 t ADT: 340

1050 EAST ROAD

Fair

Over: 'H' CANAL

0.5N 2.0E DECLO;35S-1050E, Cassia, ID

Built 1974 Load: 20.9 t ADT: 100

400 SOUTH ROAD

Fair

Over: 'H' CANAL

3.2S 1.7W DECLO;670E-400S, Cassia, ID

Built 1975 Load: 20.9 t ADT: 160

550 EAST ROAD

Fair

Over: 'J' CANAL

5.8S 3.0W DECLO;655S-550E, Cassia, ID

Built 1973 Load: 20.9 t ADT: 100

E 100 S

Fair

Over: 'G' CANAL;E.BURLEY BR

1.4S 1.0E BURLEY;100E100S, Cassia, ID

Built 1976 Load: 20.9 t ADT: 1,400

1100 EAST ROAD

Fair

Over: 'J' CANAL;SE.DECLO BR

.3S 2.5E DECLO;110S-1100E, Cassia, ID

Built 1972 Load: 20.9 t ADT: 100

200 SOUTH ROAD

Fair

Over: 'G' CANAL

1.2 S. 3.1 W. DECLO, Cassia, ID

Built 1988 Load: 20.9 t ADT: 200

200 SOUTH ROAD

Fair

Over: 'G' CANAL

1.2 S. 3.2 W. DECLO, Cassia, ID

Built 1988 Load: 20.9 t ADT: 200

950 EAST ROAD

Fair

Over: MAIN SOUTH SIDE CANAL

2.8N 1.0E DECLO;195N-950E, Cassia, ID

Built 1992 Load: 20.9 t ADT: 100

STC7632;HILAND AVE

Fair

Over: 'G' CANAL

100 S 50 E;HILAND AVE, Cassia, ID

Built 1973 Load: 20.9 t ADT: 3,300

DAM ROAD

Fair

Over: EAST CANAL

2.7 S. 1.5 W. OAKLEY, Cassia, ID

Built 2015 Load: 23.6 t ADT: 20

REID SPRING ROAD

Fair

Over: RAFT RIVER

3.5 S. 1.0 E. ALMO, Cassia, ID

Built 2001 Load: 24.5 t ADT: 200

100 SOUTH ROAD

Fair

Over: 'H' CANAL;E.DECLO BR

0.2S 1.1E DECLO;955E-100S, Cassia, ID

Built 1985 Load: 25.4 t ADT: 100

S 100 W

Fair

Over: H CANAL

2.5 S 1.0 W BURLEY, Cassia, ID

Built 1983 Load: 25.4 t ADT: 410

790N-1350E

Fair

Over: MAIN SOUTHSIDE CANAL

8.9 N. 5.0 E. DECLO, Cassia, ID

Built 1980 Load: 26.3 t ADT: 50

E. 100 S.

Fair

Over: MARSH CREEK

0.2 S. 2.4 E. DECLO, Cassia, ID

Built 1999 Load: 27.2 t ADT: 100

50 EAST ROAD

Fair

Over: 'J' CANAL;SE.BURLEY BR

6.1S 0.5E BURLEY;580S-50E, Cassia, ID

Built 1975 Load: 28.1 t ADT: 100

50 WEST ROAD

Fair

Over: 'H' CANAL

2.6S 0.1W BURLEY;220S-50W, Cassia, ID

Built 1989 Load: 30.8 t ADT: 450

SH 77

Fair

Over: CANAL

6.4 N. ALBION, Cassia, ID

Built 1985 Load: 32.7 t ADT: 1,800

500N-1130E

Fair

Over: MAIN SOUTHSIDE CANAL

6.0 N. 2.9 E. DECLO, Cassia, ID

Built 1981 Load: 33.3 t ADT: 100

STC2739;ROCK CR RD

Fair

Over: ROCK CREEK;SHOE CR.BR.

19.2 S. HANSON, Cassia, ID

Built 1971 Load: 35.4 t ADT: 590

150 EAST ROAD

Fair

Over: 'J' CANAL

6.7S 1.5E BURLEY;630S150E, Cassia, ID

Built 1996 Load: 37.2 t ADT: 100

150 EAST ROAD

Fair

Over: 'G' CANAL

2.0 S. 1.5 E. BURLEY, Cassia, ID

Built 2001 Load: 50.8 t ADT: 200

950 EAST ROAD

Fair

Over: 'J' CANAL

2.5S 1.0E DECLO;240S-950E, Cassia, ID

Built 2015 Load: 51.2 t ADT: 100

W 1000 S

Fair

Over: BIG COTTONWOOD CREEK

5.4 W. 6.5 S. PELLA, Cassia, ID

Built 1970 Load: 89.8 t ADT: 670

STC2739;ROCK CR RD

Good

Over: ROCK CREEK

17.8 S. HANSON, Cassia, ID

Built 1971 Load: 32.7 t ADT: 590

S 400 W

Good

Over: G CANAL

4.0 W 0.7 S BURLEY, Cassia, ID

Built 1994 Load: 35.4 t ADT: 990

650 EAST ROAD

Good

Over: 'H' CANAL

3.7S 2.0W DECLO;450S-650E, Cassia, ID

Built 2022 Load: 45.7 t ADT: 90

EAST MAIN STREET

Good

Over: EAST CANAL

IN OAKLEY, Cassia, ID

Built 2020 Load: 49.6 t ADT: 350

S 1050 E RD

Good

Over: J CANAL

2.0 E 0.75 S DECLO, Cassia, ID

Built 2000 Load: 63.5 t ADT: 30

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.