Interstate 15 Road Conditions & Traffic
Interstate 15 has 51 active incidents (5 critical). 1,433 miles from San Diego, CA → Sweet Grass, MT. Including 35 constructions, 16 accidents. Updated every 15 minutes.
Length
1,433 miles
Direction
North ↔ South
Route
San Diego, CA → Sweet Grass, MT
States
CA, NV, AZ, UT, ID, MT
51
Active Incidents
5
Critical
6
States
Active Incidents on Interstate 15 (51)
CONSTRUCTION
MT
Road Work
I-15
CONSTRUCTION
MT
Road Work
I-15
CONSTRUCTION
MT
Road Work
I-15
CONSTRUCTION
MT
Road Work
I-15
ACCIDENT
AZ
Disabled vehicle blocking the right lane on I-15 Northbound near Cedar Pocket Rd (MP 21)
I-15
CONSTRUCTION
MT
Road Work
I-15
CONSTRUCTION
MT
Road Work
I-15
CONSTRUCTION
ID
Minor Road maintenance on I-15 Both Directions from E Hawkins Rd to Bannock Oneida County Line. 4/14/2026 2:26 PM to 4/16/2026 5:00 PM Tue, Wed, Thu: Active all day
I-15
CONSTRUCTION
ID
Major Road maintenance on I-15 Northbound from MM (3) to MM (17). 4/8/2026 6:00 AM to 4/16/2026 7:00 PM Mon, Tue, Wed, Thu: Active all day, Fri, Sat, Sun: Paused all day Activities: Use Caution.
I-15
CONSTRUCTION
ID
Minor Workers on roadway on I-15 Northbound from MM (172) to MM (181). Lanes Alternating. 3/25/2026 7:27 AM to 4/16/2026 5:00 PM Mon, Tue, Wed, Thu: 7:00 AM - 5:00 PM, Fri, Sat, Sun: Paused all day A
I-15
CONSTRUCTION
ID
Minor Workers on roadway on I-15 Northbound from MM (172) to MM (181). Lanes Alternating. 3/25/2026 7:27 AM to 4/16/2026 5:00 PM Mon, Tue, Wed, Thu: 7:00 AM - 5:00 PM, Fri, Sat, Sun: Paused all day A
I-15
CONSTRUCTION
ID
Long term road construction on I-15-BL from W Old Highway 91 to I-15 Northbound entrance ramp. All lanes closed. 5/26/2026 7:00 AM to 6/15/2026 9:00 PM Mon, Tue, Wed, Thu, Fri, Sat, Sun: Active all d
I-15-BL
CONSTRUCTION
ID
Long term road construction on ramp from I-15 Southbound to Inkom Business Loop. All lanes closed. 5/26/2026 7:00 AM to 6/15/2026 9:00 PM Mon, Tue, Wed, Thu, Fri, Sat, Sun: Active all day
I-15 Southbound
CONSTRUCTION
ID
Long term road construction on I-15 Both Directions from Inkom to Portneuf River. 3/2/2026 7:00 PM to 10/31/2026 7:00 PM Mon, Tue, Wed, Thu, Fri, Sat, Sun: Active all day Width Restriction: 12ft
I-15
CONSTRUCTION
ID
Long term road construction on I-15 Both Directions from MM (76.5) to MM (80.9). 12/3/2024 7:13 AM to 6/1/2027 6:00 PM Mon, Tue, Wed, Thu, Fri, Sat, Sun: Active all day Speed Restriction: 65mph Activ
I-15
ACCIDENT
UT
accidentsAndIncidents
I-15
CONSTRUCTION
UT
roadwork
I-15
CONSTRUCTION
UT
roadwork
I-15
CONSTRUCTION
UT
roadwork
I-15
CONSTRUCTION
UT
roadwork
I-15
CONSTRUCTION
UT
roadwork
I-15
CONSTRUCTION
UT
roadwork
I-15
CONSTRUCTION
UT
roadwork
I-15
CONSTRUCTION
UT
roadwork
I-15
CONSTRUCTION
UT
roadwork
I-15
CONSTRUCTION
UT
roadwork
I-15
CONSTRUCTION
UT
roadwork
I-15
ACCIDENT
UT
accidentsAndIncidents
I-15
ACCIDENT
UT
accidentsAndIncidents
I-15
ACCIDENT
NV
accidentsAndIncidents
I-15
ACCIDENT
UT
accidentsAndIncidents
I-15
ACCIDENT
UT
accidentsAndIncidents
I-15
ACCIDENT
UT
accidentsAndIncidents
I-15
ACCIDENT
UT
accidentsAndIncidents
I-15
ACCIDENT
NV
accidentsAndIncidents
I-15
ACCIDENT
NV
accidentsAndIncidents
I-15
ACCIDENT
NV
accidentsAndIncidents
I-15
ACCIDENT
UT
accidentsAndIncidents
I-15
ACCIDENT
UT
accidentsAndIncidents
I-15
ACCIDENT
UT
accidentsAndIncidents
I-15
CONSTRUCTION
NV
roadwork
I-15
CONSTRUCTION
NV
roadwork
I-15 Southbound
CONSTRUCTION
NV
roadwork
I-15 Northbound
CONSTRUCTION
NV
roadwork
I-15 CD
ACCIDENT
UT
accidentsAndIncidents
I-15
CONSTRUCTION
ID
Minor Road maintenance on I-15 Both Directions from E Hawkins Rd to Bannock Oneida County Line. 4/14/2026 2:26 PM to 4/16/2026 5:00 PM Tue, Wed, Thu: Active all day
I-15
CONSTRUCTION
ID
Major Road maintenance on I-15 Northbound from MM (3) to MM (17). 4/8/2026 6:00 AM to 4/16/2026 7:00 PM Mon, Tue, Wed, Thu: Active all day, Fri, Sat, Sun: Paused all day Activities: Use Caution.
I-15
CONSTRUCTION
ID
Major Road maintenance on I-15 Northbound from MM (3) to MM (17). 4/8/2026 6:00 AM to 4/16/2026 7:00 PM Mon, Tue, Wed, Thu: Active all day, Fri, Sat, Sun: Paused all day Activities: Use Caution.
I-15
CONSTRUCTION
UT
roadwork
I-15
CONSTRUCTION
UT
roadwork
I-15
Showing 50 of 51 incidents. View all on map →
Last updated: Apr 15, 2026, 6:19 PM ET
Frequently Asked Questions: Interstate 15
What are the current road conditions on Interstate 15?
Interstate 15 currently has 51 active incidents, including 35 constructions, 16 accidents. View our interactive map for exact locations and details.
What states does Interstate 15 pass through?
Interstate 15 runs 1,433 miles from San Diego, CA → Sweet Grass, MT, passing through 6 states: CA, NV, AZ, UT, ID, MT.
How long is Interstate 15?
Interstate 15 is 1,433 miles long, running north to south from San Diego, CA → Sweet Grass, MT.
Interactive Interstate 15 Map
See all incidents, weather alerts, and traffic on Interstate 15 in real-time.
Open Live Map →