ABRP thinks highway is closed when only off ramp is closed
ABRP is rerouting because it thinks the highway is closed when in reality only the off ramp is closed. I have posted a bug report about this before and it was closed as resolved. I have noticed this problem is less common, however I am still seeing it on the I-55\I-80 interchange south east of Chicago when traveling south on I-55. Maybe the adjustment made needs a little more adjustment?
- Where does this happen?
- ABRP version number (found at bottom of settings menu)
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Comments11
Tyler Hoobler
Dec 23, 2025
Previous ticket with same issue.
https://abrp.featurebase.app/p/i-55-and-i-80-interchange-reroutes-to-avoid-road
Tyler Hoobler
Dec 29, 2025
•Merged request
•1 vote
I-55 and I-80 interchange reroutes to avoid road closure that doesn't exist
ABRP thinks both northbound and southbound directions of I-55 at the I-80 interchange near Joliet, Illinois are closed and tries to route around it. However I-55 is open in both directions, but the two off ramps are closed. There is no need to reroute.
https://abetterrouteplanner.com/?plan_uuid=188db500-03ee-4577-9d6a-83d676e46990
Tyler Hoobler
Jul 3, 2025
Actually, looking into this further there seems to be a systemic problem. Everywhere I’ve checked that shows an off-ramp closure on Google Maps, ABRP tries to avoid sending through traffic on the road that is not closed.
Tyler Hoobler
Jul 3, 2025
Doing some more testing it may be specific to four leaf clover off ramps. I’ll attach some screenshots to demonstrate.
I-80 and South Larkin Ave.
I-55 and I-80
Tyler Hoobler
Jul 3, 2025
Well, it does not appear to be specific to four leaf clovers but rather off ramps and\or on ramps in general. Oddly this underpass ABRP works fine northbound but reroutes southbound.
I-80 and Richards St. southbound
Linda ABRP
Jul 4, 2025
Hi
It’s a map-matching problem where we accidentally close the piece of the highway because HERE geometry is slightly different from OSM and the shape of the closure overlaps with the piece of the highway. My colleague is looking at this to see how we can make it work.
Linda ABRP
Dec 29, 2025
Hi
Can you send me a link to the plan and I will forward it to my colleague to look at.
Tyler Hoobler
Dec 30, 2025
https://abetterrouteplanner.com/?plan_uuid=1b27ad80-2c5c-41c4-8cec-874b4888ffb7
Ok, now I am really confused. I wanted to make sure the linked worked so I right-clicked it and selected open in incognito window and the problem was gone. However as soon as I signed in to my account it re-routed around the interchange. I do not have anything selected in “Avoid on Route” and I have tried different makes and models of car.
Linda ABRP
Dec 30, 2025
Does it change if you toggle on or off Live traffic?
Tyler Hoobler
Dec 31, 2025
Yes, that does change the route form diverting to straight through. So is this just the system saying the traffic is so bad that I’m better off taking the diversion?
Linda ABRP
Jan 2
It’s because of traffic but we should not make a route like this. My colleague is working on a fix for this problem.