Safety Incidents OSHA Severe Injury Reports · 2015–2025
5,189,992Inspections Most recent open 2026-07-18 Last loaded 2026-07-22

OSHA Inspection: KNIFE RIVER CORPORATION - MOUNTAIN WEST

Referral inspection · Safety discipline

On , OSHA opened a referral safety inspection of KNIFE RIVER CORPORATION - MOUNTAIN WEST in CORNER OF PARK AND BROADWAY, IDAHO FALLS, ID 83401 (NAICS 238910). OSHA activity number 345916209.

What this inspection record means

OSHA opens inspections for many reasons — routine scheduling under a national or local emphasis program, an employee complaint or referral, or a follow-up after a reported injury. Opening or conducting an inspection is not itself an allegation or a finding that this employer broke any rule; any findings appear as the citations listed below, and citations can be contested, reduced, or withdrawn.

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Site address
CORNER OF PARK AND BROADWAY
City
IDAHO FALLS
State
ID
ZIP
83401
Mailing
5450 WEST GOWEN ROAD, BOISE, ID 83709
Inspection type
Referral (C)
Scope
Partial (B)
Discipline
Safety
Advance notice
No
Union status
B
Opened
Closing conference
Case closed
Last modified
Data loaded
NAICS code
238910
Employees
4
Ownership type
A

5 citations on file for this inspection.

1926.200 G01

Serious Gravity 5 1 instance 2 exposed
Issued
Oct 6, 2022
Abate by
Oct 13, 2022
Penalty
Initial $8,204 · Current $4,922 Reduced
29 CFR  1926.200(g)(1): Construction areas were not posted with legible traffic signs at points of hazards:  a) On April 19, 2022 and times prior the employer did not provide traffic control signs or other protective devices for employees in a three way intersection while they were adjusting underground water service valves at various locations in and around the intersection, exposing them to the hazard of being struck by vehicles.    Note) Certification of corrective action is required for this item.
Recent events (2)
  • — I (S) $4922
  • — Z (S) $8204

1926.651 I03

Deleted Serious Gravity 5 1 instance 3 exposed
Issued
Oct 6, 2022
Abate by
Oct 13, 2022
Penalty
Initial $10,256 · Current $0 Reduced
29 CFR  1926.651(i)(3): Sidewalks, pavements, or appurtenant structures had been undermined and a support system or another method was not provided to protect employees from the possible collapse of such structures:  a) On April 19, 2022, and times prior employees were exposed to the hazard of an undermined sidewalk, located near the ladder used for entering and exiting the excavation.  No support or other protective devices were used in the 5.7 foot-deep area of the excavation.     Note) Certification of corrective action is required for this item.
Recent events (2)
  • — I (S) $0
  • — Z (S) $10256

1926.651 K02

Deleted Serious Gravity 5 1 instance 3 exposed
Issued
Oct 6, 2022
Abate by
Oct 13, 2022
Penalty
Initial $0 · Current $0
29 CFR  1926.651(k)(2): Where the competent person found evidence of a situation that could result in a possible cave-in, indications of failure of protective systems, hazardous atmospheres, or other hazardous conditions, exposed employees were not removed from the hazardous area until the necessary precautions have been taken to ensure their safety:  a) On April 19, 2022, and times prior the competent person on site did not ensure measures were taken for cave-in protection and support of an undermined sidewalk when employees entered and installed a commercial water line in an excavation that was between 5.3 and 6 feet-deep.      Note) Certification of corrective action is required for this item.
Recent events (2)
  • — I (S) $0
  • — Z (S) $0

1926.651 K01

Repeat Gravity 5 1 instance 3 exposed
Issued
Oct 6, 2022
Abate by
Oct 13, 2022
Penalty
Initial $51,282 · Current $46,154 Reduced
29 CFR  1926.651(k)(1): Daily inspections of excavations, the adjacent areas, and protective systems were not made by a competent person prior to the start of work, or as needed throughout the shift, for evidence of a situation that could result in possible cave-ins, indications of failure of protective systems, hazardous atmospheres, or other hazardous conditions.  a)  On April 19, 2022 and times prior the competent person on site did not conduct inspections throughout the work shift to adequately evaluate the changing scope of work and conditions of an excavation where employees worked to install a new a commercial water line.  Protective systems were not used as the excavation depth ranged from 5.7 to 6 feet deep.    Knife River Corporation - Northwest was previously cited for a violation of this occupational safety and health standard, which was contained in OSHA inspection number 1242651, Citation number 1, Item number 2a, and was affirmed as a final order on August 24, 2017, with respect to a workplace located on Cameron Street in Kellogg, ID.  Knife River Corporation  was previously cited for a violation of this occupational safety and health standard, which was contained in OSHA inspection number 1358224, citation number 2, item number 1 and was affirmed as a final order on April 4, 2019, with respect to a workplace located at 3rd Avenue & Main Street in Lava Hot Springs, ID.  Knife River Corporation  was previously cited for a violation of this occupational safety and health standard, which was contained in OSHA inspection number  1523458, citation number 2, item number 2a, and was affirmed as a final order on October 25, 2021, with respect to a workplace located at Franklin Road and Cloverdale, Boise, ID .    Note) Competent person for this sub part means one who is capable of identifying existing and predictable hazards in the surroundings, or working conditions which are unsanitary, hazardous, or dangerous to employees, and who has authorization to take prompt corrective measures to eliminate them.        Note) Certification and documentation of corrective actions are required for this item.
Recent events (2)
  • — I (R) $46154
  • — Z (R) $51282

1926.652 A01

Repeat Gravity 5 1 instance 3 exposed
Issued
Oct 6, 2022
Abate by
Oct 13, 2022
Penalty
Initial $0 · Current $0
29 CFR 1926.652(a)(1):  Each employee in an excavation was not protected from cave-ins by an adequate protective system designed in accordance with paragraph (b) or (c) of this section.  a) On April 19, 2022 and times prior, an adequate protective system was not used for soil that the employer determined to be type C, while employees worked in an excavation that ranged from 5.3 to 6 feet deep to install a new commercial water line.   Knife River Corporation, dba Knife River was previously cited for a violation of this occupational safety and health standard, which was contained in OSHA inspection number 1358224, citation number 1, item number 1b and was affirmed as a final order on April 4, 2019, with respect to a workplace located on 3rd Avenue and Main Street in Lava Hot Springs, ID.  Note) Certification and documentation of corrective actions are required for this item.
Recent events (2)
  • — I (R) $0
  • — Z (R) $0

View Knife River Corporation - Mountain West's full OSHA safety record →

This record is reproduced from the U.S. Department of Labor Open Data API (OSHA inspection dataset). The original IMIS detail view is available at OSHA's Establishment Search for activity number 345916209.

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