Construction management, highway, road, street and bridge · Idaho
Knife River - Idaho
Boise, ID · ~475 workers · 2 years of OSHA Injury Tracking Application data.
- B
- Good Safety Record
- 1.9
- Avg TCR
- 2.8
- Industry avg
- 0
- Fatalities
The verdict
Knife River - Idaho runs at 68% of its industry's injury rate - safer than the typical Construction management, highway, road, street and bridge workplace, earning a grade B.
- B
- Good Safety Record
- 1.9
- avg TCR · per 100 workers
- 2.8
- industry benchmark (BLS)
- 21
- recordable injuries tracked
Grade compares Knife River - Idaho's OSHA Total Case Rate of 1.9 to the Construction management, highway, road, street and bridge BLS benchmark of 2.8 (68% of benchmark) across 2 years of Form 300A filings (2016–2024). <a href="/methodology">See methodology</a> for reporting-limitation caveats.
Injury rate over time
Knife River - Idaho's yearly Total Case Rate, against the 2.8 industry benchmark.
Where Knife River - Idaho falls in its industry
4,628 Construction management, highw establishmentsSafer than 60% of graded establishments in this industry, whose median TCR is 2.5.
Narrower to Idaho alone (the establishments it most directly competes with for workers and contracts): ranked #6 safest of 18 Construction management, highw employers in Idaho.
Trend analysis for Knife River - Idaho
Between 2016 and 2017, Knife River - Idaho's Total Case Rate worsened from 1.3 to 2.5 recordable injuries per 100 full-time workers, a 104% increase across 1 year of OSHA reporting.
The safest year on record was 2016, at a TCR of 1.3, while 2017 saw the highest rate, at 2.5, a spread of 1.3 points between the best and worst reporting years. That's a wide swing relative to the establishment's overall rate, worth checking the year-by-year table below for whether a single severe year is driving the average, rather than a sustained trend.
Summed across those 2 reporting years, Knife River - Idaho recorded 21 total injuries and illnesses, with no fatalities reported in any of those years. Readers comparing establishments should weigh the 2-year trend above alongside establishment size, since a larger workforce naturally accumulates more raw incidents even at a lower per-100-worker rate.
Verify This Employer with OSHA
The 21 injuries shown on this page for Knife River - Idaho are sourced from its own 2 years of mandatory OSHA Form 300A summaries. Cross-check the underlying establishment record directly against the federal source, name, NAICS classification, recordable case totals, and inspection history are all searchable on OSHA's Establishment-Specific Injury and Illness Data system.
Verify on OSHA Establishment SearchSource: U.S. Department of Labor, OSHA Establishment-Specific Injury and Illness Data. NAICS 237310 - Construction management, highway, road, street and bridge.
DART Rate, Transparent Calculation (2017)
What is the DART rate formula?
DART (Days Away, Restricted, or Transferred) is computed by OSHA as incidents × 200,000 ÷ hours worked. The 200,000-hour denominator equals roughly 100 full-time workers, which lets establishments of very different sizes be compared directly.
10 DART incidents × 200,000 ÷ 1,097,796 hours worked = 1.82 DART
Methodology: 29 CFR 1904, OSHA Form 300A recordkeeping
Cross-Validating Context, Establishment vs Industry vs State
| Benchmark | TCR | Source |
|---|---|---|
| Knife River - Idaho (this establishment) | 1.90 | OSHA ITA Form 300A, 2-year avg |
| Road construction industry avg | 2.80 | BLS IIF, NAICS 237310 |
| Idaho state avg (all industries) | 6.23 | OSHA ITA, state-level rollup |
Industry benchmarks: Bureau of Labor Statistics, Injuries, Illnesses, and Fatalities (IIF) program
Reportable Incident Timeline
Year-by-year reportable incidents (recordable injuries + illnesses + fatalities) submitted by Knife River - Idaho to OSHA's Injury Tracking Application. Each row anchors to OSHA's inspection records search where you can pull the underlying inspection case numbers and citations for that establishment-year.
- 2017: 14 reportable incidents · 14 injuries, 0 illnesses, 0 fatalities - OSHA inspection records (case numbers)
- 2016: 7 reportable incidents · 7 injuries, 0 illnesses, 0 fatalities - OSHA inspection records (case numbers)
Source: OSHA Inspection Information System (IMIS) - inspection case-number records
Year-by-Year Safety Data
| Year | TCR | DART | Injuries | Illnesses | Fatalities |
|---|---|---|---|---|---|
| 2017 | 2.5 | 1.8 | 14 | 0 | 0 |
| 2016 | 1.3 | 1.1 | 7 | 0 | 0 |
What this grade means for you
Use this grade as a relative read on Knife River - Idaho's reported OSHA injury record, strong versus its Construction management, highway, road, street and bridge peers, but not a guarantee about any single site today.
- At 68% of the Construction management, highway, road, street and bridge benchmark, Knife River - Idaho reports fewer injuries than typical peers, still worth asking how safety is managed day to day. Know your rights
- Judge this record against the wider Construction management, highway, road, street and bridge sector, where injury rates vary widely, before comparing it in isolation. See the industry
- Grades reflect 2016–2024 filings; check the latest establishment record straight from OSHA, or look up a different employer. Look up another
Safety grades reflect employers' self-reported OSHA Form 300A filings from 2016 to 2024 and can lag current conditions. A grade is not a guarantee that any specific workplace is safe or unsafe today. See our methodology and disclaimer.
Frequently Asked Questions
What is Knife River - Idaho's safety grade?
How many injuries has Knife River - Idaho reported?
Similar Employers
Matched by safety record across the industry, by workforce size within Idaho, and by nearby establishments in Boise - a different peer set than the category browse links below.
Similar TCR (~1.9)
Similar size (~475 workers)
Read our methodology - how this data is sourced, computed, and verified.
Every figure and grade on PlainSafetyScore is computed directly from OSHA's published Injury Tracking Application data and BLS industry benchmarks, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these safety grades, or report a data error. Data current as of 2016-2024 OSHA ITA release.