Exits where the majority of traffic exits off the highway.

[thspfc]

I assume more traffic on WB I-80 in western Nebraska exits to I-76 than continues on I-80.

You're probably right. I-80 is very empty west of I-76. I-76 isn't very busy either, but it's busier than I-80, especially from around Fort Morgan westward.

[TheStranger]

US 101 north at I-80 east in San Francisco, where 101 switches over from the Bayshore Freeway to the Central Freeway, while most traffic is heading either to the Financial District/South of Market areas or to the Bay Bridge.

I suspect a similar thing might exist at the I-80/US 50 split in West Sacramento, but I-80 exits off itself there due to the 1982 reroutings that eliminated 1968-1982 I-880 through Natomas, so that's not quite the same situation.

Here's one that I wonder if anyone can look into:  I-5 at US 101 in the East Los Angeles Interchange, where 5 exits the Santa Ana Freeway for the Golden State Freeway while 101 heads to downtown Los Angeles along the Santa Ana corridor.

[ozarkman417]

In Springfield, US 60 Eastbound loses most of its traffic at US 65. North of there, US 65 loses Northbound over 2/3rds of its traffic to I-44.

[TheHighwayMan3561]

I-394 eastbound at I-94 in Minneapolis (160K to 58K)

[Dirt Roads]

Close, but not quite.  The Durham Freeway (NC-147) [westbound] loses much of its traffic to US-15/US-501 (Fifteen Five-oh-one) but the latest traffic numbers show 45,000 ADT before the interchange and 23,000 ADT between US-15/US-501 and I-85 southbound.  This one is interesting since it loses traffic fairly equally to both directions of US-15/US-50 (6,700 northbound and 7,600 southbound).  The imbalance there might mean that this could be a real one.

[CtrlAltDel]

I assume more traffic on WB I-80 in western Nebraska exits to I-76 than continues on I-80.

You're probably right. I-80 is very empty west of I-76. I-76 isn't very busy either, but it's busier than I-80, especially from around Fort Morgan westward.

It's pretty close, but hard to know for sure without the directional data.

[skluth]

My favorite (/sarcasm) is CTH A and WI 26 south of Juneau where more traffic exits to CTH A than continues on WI 26 towards Juneau. Not an interstate or even a busy highway there, but it's still more traffic on a very rural CTH than the state highway. Maybe they'll fix that if WI 26 traffic increases from the two-lane traffic levels currently using the roads. From WisDOT Traffic Counts.

[webny99]

Thinking about the I-90/I-84 exit where I think more traffic exits. My apologies if this has been done before.

I remember discussing this location before and we did establish that more traffic exits.

I can't remember if it was in a similar thread or part of a different discussion. I've spent quite a while searching and cannot find it, so I would applaud anyone that can find it.

[andrepoiy]

Most traffic going southbound on Highway 400 exits at Highway 401, since continuing on the 400 only leads to one exit before the freeway ends.



A significant volume of traffic going northbound on Highway 427 exits into Highway 401, with smaller amounts exiting at other exits at this interchange.

If one uses satellite view, the collector/express combined have 8 lanes before the interchange, and after all the ramps leave, it only leaves behind 2 lanes of mainline Highway 427 going through the interchange. (after the interchange, ramps from the 401 and other roads merge with mainline, but only add up to 5 lanes.)

Red represents 401 exits, blue represents other exits, and black is mainline.

[hbelkins]

I-471 ends at I-275. The short spur between I-275 and US 27 is technically known as KY 471, and posted as either "To US 27" or "To I-471" depending on direction of travel.

[Dirt Roads]

Close, but not quite.  The Durham Freeway (NC-147) [westbound] loses much of its traffic to US-15/US-501 (Fifteen Five-oh-one) but the latest traffic numbers show 45,000 ADT before the interchange and 23,000 ADT between US-15/US-501 and I-85 southbound.  This one is interesting since it loses traffic fairly equally to both directions of US-15/US-50 (6,700 northbound and 7,600 southbound).  The imbalance there might mean that this could be a real one.

How about the other end of the Durham Freeway?  Can't believe that I missed this one.  NC-147 goes from 74,500 AADT down to 16,000 AADT south of I-40.  50,500 AADT of that is heading to/from Raleigh on I-40.  An unusual feature is the imbalance of traffic toward Chapel Hill on I-40 (7,800 AADT) versus coming from Chapel Hill (6,300 AADT). 

[Joe The Dragon]

I-355 / I-290
I-355 is main flow but listed as an exit.

[Henry]

The east end of I-105 in Los Angeles is at Studebaker Road, well short of I-5, so traffic defaults onto I-605, which comes immediately before that. It's probably because an extension to its parent was planned to give it a proper terminus, but was shot down by opposition from the community in its path.

[Hwy 61 Revisited]

U.S. 22 at PA 33 near Easton. Thank god, because then Cemetery Curve would be blocked all the time.

[SeriesE]

I-5 N in Kern County,CA at CA-99. Most traffic exits to CA-99 rather than continuing on I-5. (though this is a TOTSO situation)

[Roadgeekteen]

I-5 N in Kern County,CA at CA-99. Most traffic exits to CA-99 rather than continuing on I-5. (though this is a TOTSO situation)

I'm guessing that local traffic to Bakersfield and Fresno outnumbers long-distance travelers to the Bay Area and Sacramento?

[JCinSummerfield]

I-75 at US 2 in St. Ignace, Michigan. I believe the split is something like 2:1 traffic leaving vs. continuing.

Northbound, absolutely.  Southbound, I'd guess the numbers are overwhelmingly opposite.

[Occidental Tourist]

I don't believe it's a huge difference based on the AADT counts, but the majority of traffic on US 395 south exits on CA 14 south rather than continuing on 395.

[SeriesE]

I-5 N in Kern County,CA at CA-99. Most traffic exits to CA-99 rather than continuing on I-5. (though this is a TOTSO situation)

I'm guessing that local traffic to Bakersfield and Fresno outnumbers long-distance travelers to the Bay Area and Sacramento?

Yes. There's also another big drop at the I-580 split and traffic doesn't pick up until the I-205 merge near Tracy for the Bay Area to Stockton/Sacramento traffic.

[roadman65]

In Winter Garden, FL more SB SR 429 traffic departs at the exit ramp for CR 535 than remains on it. Bottlenecks occur due to this being the ramp end is signalized and narrower than the freeway it departs.

[BrianP]

I would assume this happens on I-95 north of Philadelphia.  Where most traffic continues on to I-295. 

I'm curious about I-78/US 22 west of Allentown.  Does more traffic volume leave I-78 and use US 22?  I would guess so since the Turnpike interchanges with US 22. 

[doorknob60]

I don't have numbers to back this up right now, but I am pretty sure that most northbound I-15 traffic in Idaho Falls exits to eastbound US-20, rather than continuing north. US-20 serves cities like Rexburg and Rigby, and tourist traffic to Yellowstone, where I-15 continues through a lot of nothing until Butte, MT. Also, US-20 is a freeway, and ITD is studying options to create a new free-flowing US-20 interchange (and they are also making a free flowing right turn on the existing one short-term), so they know it's an important movement.



Assuming the numbers are what I suspect, this may be one of the few instances where the majority of 2di traffic is exiting for a non-interstate. I-70 to US-6 in Utah being another good example mentioned earlier.

[Hwy 61 Revisited]

I would assume this happens on I-95 north of Philadelphia.  Where most traffic continues on to I-295. 

I'm curious about I-78/US 22 west of Allentown.  Does more traffic volume leave I-78 and use US 22?  I would guess so since the Turnpike interchanges with US 22.

Yes. The segment of 78 between 22 and 309 only carries 38 thousand people before going up to 99,000. Meanwhile, 22 carries 50,000 by the actual interchange and even more once it interchanges with 309.


Speaking of which, the 309 freeway in Allentown actually carries about 43,000 people before 22 and 19,000 after.

[kphoger]

I don't have numbers to back this up right now, but I am pretty sure that most northbound I-15 traffic in Idaho Falls exits to eastbound US-20, rather than continuing north. US-20 serves cities like Rexburg and Rigby, and tourist traffic to Yellowstone, where I-15 continues through a lot of nothing until Butte, MT. Also, US-20 is a freeway, and ITD is studying options to create a new free-flowing US-20 interchange (and they are also making a free flowing right turn on the existing one short-term), so they know it's an important movement.



Assuming the numbers are what I suspect, this may be one of the few instances where the majority of 2di traffic is exiting for a non-interstate. I-70 to US-6 in Utah being another good example mentioned earlier.

Confirmed.  The exit ramp has a higher AADT than the segment of I-15 north of that junction.

[sprjus4]

A few Virginia examples -

The majority of traffic on I-295 South east of Richmond exits towards I-64 East rather than staying on I-295.

2019 figures:
I-295 north of I-64 - 74,000
I-295 south of I-64 - 26,000
I-64 west of I-295 - 37,000
I-64 east of I-295 - 74,000

The majority of traffic on US-17 South in Chesapeake exits at VA-165 Cedar Rd rather than staying on US-17.

2019 figures:
US-17 north of VA-165 - 27,000
US-17 south of VA-165 - 10,000
VA-165 west of US-17 - 13,000
VA-165 east of US-17 - 27,000

The majority of traffic on VA-168 South in Chesapeake exits at Hillcrest Pkwy - mainly bound to VA-168 Business South to avoid the toll road, then rejoining it south of Gallbush Rd - rather than staying on VA-168.

2019 figures:
VA-168 north of Hillcrest Pkwy - 38,000
VA-168 south of Hillcrest Pkwy - 11,000