I-66 West Traffic in Northern Virginia

As of 3:45 pm EDT, I-66 West in Northern Virginia is averaging 70 mph across 4 sensors.

Is I-66 West moving right now?

Yes. No stretch of I-66 West in Northern Virginia is under 40 mph right now (as of 3:45 pm EDT).

Earlier in the last 24 hours

2:40 pm: Disabled vehicle, I-66 WB at Rte Change;
12:41 pm: Disabled vehicle, I-66 WB at Overlap Rte; Ramp from Sudley Rd, Rte 234, Bus Rte 234; Rte 234 Rmp 26B
10:55 am: Disabled vehicle, I-66 WB at Overlap Rte; Ramp from Sudley Rd, Rte 234, Bus Rte 234; Rte 234 Rmp 26B
10:30 am: Disabled vehicle, I-66 WB at Ramp to Rte 66 Rmp 28B; Rte 66 Rmp 28A
10:10 am: Disabled vehicle, I-66 WB at Maint Bdy;
7:10 pm: Crash, I-66 WB at Rte Change;

Best time to drive I-66 West

Traffic is usually worst on Thursday around 4 pm (about 51 mph). On weekdays the morning slowdown peaks around 10 am (62 mph on Thursdays) and the evening slowdown around 4 pm (51 mph on Thursdays). Midday (10 am to 2 pm) averages 67 mph. On weekends it is slowest on Sundays around 5 am (66 mph).

Typical average speed (mph) on I-66 West in Northern Virginia, by day and hour (local time)
Day	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	69	–	65	65	65	68	–	–	–	–	–	–	–	–	–	–	70
Tue	66	66	65	66	68	69	67	70	70	70	71	71	72	72	71	71	71
Wed	64	64	66	69	68	68	67	69	70	70	71	72	72	72	71	71	71
Thu	66	67	65	68	64	62	63	63	63	64	–	51	59	72	71	70	71
Fri	68	64	65	69	68	68	69	70	70	67	64	58	64	71	69	70	71
Sat	68	66	69	70	71	70	71	68	71	72	72	73	72	73	72	71	72
Sun	66	69	70	71	70	71	72	73	72	72	72	74	74	73	72	70	72

Averages of every 5-minute reading we have recorded at this time of the week. Colors match the live map.

Questions

When is traffic worst on I-66 West in Northern Virginia?

Traffic on I-66 West is usually worst on Thursday around 4 pm (about 51 mph).

What is the best time to drive I-66 West in Northern Virginia?

On weekdays, avoid around 10 am (62 mph on Thursdays) and around 4 pm (51 mph on Thursdays). Midday (10 am to 2 pm) averages 67 mph, and early mornings and late evenings are fastest.

Is I-66 West busy right now?

As of 3:45 pm EDT, I-66 West in Northern Virginia is averaging 70 mph across 4 sensors.

Plan ahead: Northern Virginia traffic tomorrow · Traffic estimator

Other freeways in Northern Virginia

I-66 East · I-95 North · I-95 South · I-270 North · I-270 South

Day	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	69	–	65	65	65	68	–	–	–	–	–	–	–	–	–	–	70
Tue	66	66	65	66	68	69	67	70	70	70	71	71	72	72	71	71	71
Wed	64	64	66	69	68	68	67	69	70	70	71	72	72	72	71	71	71
Thu	66	67	65	68	64	62	63	63	63	64	–	51	59	72	71	70	71
Fri	68	64	65	69	68	68	69	70	70	67	64	58	64	71	69	70	71
Sat	68	66	69	70	71	70	71	68	71	72	72	73	72	73	72	71	72
Sun	66	69	70	71	70	71	72	73	72	72	72	74	74	73	72	70	72

Day	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	69	–	65	65	65	68	–	–	–	–	–	–	–	–	–	–	70
Tue	66	66	65	66	68	69	67	70	70	70	71	71	72	72	71	71	71
Wed	64	64	66	69	68	68	67	69	70	70	71	72	72	72	71	71	71
Thu	66	67	65	68	64	62	63	63	63	64	–	51	59	72	71	70	71
Fri	68	64	65	69	68	68	69	70	70	67	64	58	64	71	69	70	71
Sat	68	66	69	70	71	70	71	68	71	72	72	73	72	73	72	71	72
Sun	66	69	70	71	70	71	72	73	72	72	72	74	74	73	72	70	72

Day	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	69	–	65	65	65	68	–	–	–	–	–	–	–	–	–	–	70
Tue	66	66	65	66	68	69	67	70	70	70	71	71	72	72	71	71	71
Wed	64	64	66	69	68	68	67	69	70	70	71	72	72	72	71	71	71
Thu	66	67	65	68	64	62	63	63	63	64	–	51	59	72	71	70	71
Fri	68	64	65	69	68	68	69	70	70	67	64	58	64	71	69	70	71
Sat	68	66	69	70	71	70	71	68	71	72	72	73	72	73	72	71	72
Sun	66	69	70	71	70	71	72	73	72	72	72	74	74	73	72	70	72