Rank Your States Border Crossings in order of volume of travel crossed

[andrepoiy]

Ontario AADT from 2019.

Ontario-Quebec. Note that this is only for provincial highways, so crossings between Ottawa and Gatineau are not included. I only included the major ones as I don't have time to search for all crossings in the North.

Highway 401/Aut 20: 13,600
Highway 417/Aut 40: 20,300

Ontario-Michigan. Note that this is only for provincial highways, so Ambassador Bridge isn't included since Huron Church Road is maintained by the City.

Highway 402/I-93: 12,500


Ontario-New York. Note that Rainbow bridge isn't included since the approach is owned by City of Niagara Falls.

QEW/I-190 Buffalo: 14,800
Highway 405/I-190 Lewiston: 8,050


Ontario-Manitoba

Highway 17/TCH Highway 1: 4,900

[vdeane]

Ontario AADT from 2019.

Ontario-Quebec. Note that this is only for provincial highways, so crossings between Ottawa and Gatineau are not included. I only included the major ones as I don't have time to search for all crossings in the North.

Highway 401/Aut 20: 13,600
Highway 417/Aut 40: 20,300

Ontario-Michigan. Note that this is only for provincial highways, so Ambassador Bridge isn't included since Huron Church Road is maintained by the City.

Highway 402/I-93: 12,500


Ontario-New York. Note that Rainbow bridge isn't included since the approach is owned by City of Niagara Falls.

QEW/I-190 Buffalo: 14,800
Highway 405/I-190 Lewiston: 8,050


Ontario-Manitoba

Highway 17/TCH Highway 1: 4,900

Hmm... looks like MTO's sparse network combined with nothing making Canadian provinces collect data on non-provincial routes (unlike US states, which are required by FHWA to collect data on all federal aid routes, even local ones) makes for sparse data.  I was curious, so I compiled some stats using data from the surrounding jurisdictions (although Michigan and NY actually use traffic statistics from the South Niagara Chamber of Commerce as MDOT doesn't have data for the Detroit-Windsor crossings, and I used it for all of them for consistency, bar the Cape Vincent Ferry, which they don't have).  It doesn't change the ranking, however.

Québec - 143,540
This is still lacking a ton of local crossings, but it isn't even close.

Code Select Expand

RR 2/QC 338 1,500
ON 401/A-20 22,200
RR 18/QC 340 620
RR 10 750
ON 417/A-40 20,700
Ch. des Outaouois 970
QC 344 13,600
QC 315 3,200
A-5 67,000
RR 653/QC 301 2,130
ON 148/QC 148 5,500
RR 635 420
ON 63/QC 101 1,570
ON 65 2,360
ON 66/QC 117 450
ON 101/QC 338 460
Translimit Road 110

New York - 39,960
Interesting how this number is lower than the one computed with NYSDOT data earlier.

Code Select Expand

QEW 12,287
Rainbow Bridge 4,995
Whirlpool Bridge 1,037
ON 405/I-190 7,992
Cape Vincent Ferry 315
ON 137/I-81 5,166
NY 812/Ogdensburg-Prescott Bridge 1,465
Seaway International Bridge 6,703

Michigan - 39,650

Code Select Expand

I-75 2,660
ON 402/I-94/I-69 9,953
Detroit-Windsor Tunnel 10,172
Ambassador Bridge 16,865
ON 401/Gordie Howe Bridge 0

Manitoba - 5,820

Code Select Expand

MB 315 100
MB 312 410
ON 417/TCH 1 5,310

Minnesota - 3,804
I was surprised it was this low.  I would have thought at least ON 61/MN 61 would have more, given that Duluth is a decent-sized metro area and Thunder Bay is THE big city in that part of Ontario.  Is this why the only connection on the US side is a lowly state route, not even a US route, much less I-35?

Code Select Expand

ON 11/MN 72 1,200
US 53 1,406
ON 61/MN 61 1,198

And, of course, Nunavut, Ohio, and Pennsylvania are tied at 0.

[GaryV]

Ohio

I wouldn't be so sure. There's probably some people that take the ferry from Leamington to one of the Ohio islands.

[NWI_Irish96]

For Indiana:

1. Illinois- I-80/94 and the Indiana Toll Road to Chicago. Loads of semis, tourist and commuter traffic on one highway.

2. Michigan- mainly I-94 with semi and tourist traffic!

3. Ohio- I-70 (truck traffic) and the Ohio Turnpike!

4. Kentucky- Bridge crossings (Louisville mainly).

I-80/94 has to be one of the highest volume state line crossings in the nation.

[Quillz]

For California, I can't imagine many people crossing into Nevada via CA-299. It's just a dirt road on the Nevada side.

[Quillz]

Route 167 is the desolate road that connects Mono Lake to NV-359 to Hawthorne. Don't break down on that road.

Ah, so I was close. Looks like 299 is the second least traveled crossing.

The odd thing is I recall reading somewhere (maybe here?) that 167 was being promoted as some kind of California-to-Idaho connector for commercial traffic. Like trucks were taking 167 because it was a quicker way to reach Idaho than any other option.

167 is also notable for being almost a perfect straight line. You can see it travel more than 15 miles into the distance from the 395 junction.

[bassoon1986]

Louisiana - gotta be

1. Texas
2. Mississippi
3. Arkansas

Would love to see data on these state line crossings.

[Sctvhound]

South Carolina is North Carolina over Georgia as the Charlotte metro area has major cross-border traffic from SC to NC and back. I-77 is over 180,000 cars a day at the SC/NC line at Carowinds.

Myrtle Beach also has some NC to SC and back traffic as you have southern Brunswick County which is basically Myrtle Beach's exurbs. Also traffic on 26 going from SC to NC with South Carolinians going to the mountains.

SC and GA are close too, with Augusta and Savannah both being bi-state metros.