Best route from Dillon MT to West Glacier

Thank you all for your helpful responses! We traveled straight through on I90 without any problem. I'm not sure why the RV Life Wizard app showed the big yellow alert, but it was a false alarm.

All of your input was so helpful though!

Thank you again!

Google Maps suggests leaving I90 as US12, and taking MT83 north. This is a bit shorter and faster than the alternative using US93 (the lower underpass that your app warns about it just before that exit).

So there is a good alternative. But as others stress, a real freeway height restriction this low would be well known and frequently damaged. Your app is misleading you - there's very little reason for a non-local RV to cross under the freeway on Butler Ck Rd.

dedmiston wrote:

valhalla360 wrote:
- The height listed is the lowest point of the crossing. Often that only impacts one lane. The other lanes (or shoulder) may be higher.

So aim for the lane where the overpass doesn't have any scrapes? :B

If you missed the signs routing you off...pretty much.

If it really is 13'6" with no margin for error and it's not posted with dozen advance signs warning you to get off, you can bet there will be a ton of scrapes because pretty much every stock full height semi will be hitting it.

valhalla360 wrote:
- The height listed is the lowest point of the crossing. Often that only impacts one lane. The other lanes (or shoulder) may be higher.

So aim for the lane where the overpass doesn't have any scrapes? :B

On Google Maps Sat view, I looked at I90 west of Missoula. Mostly I90 is above the cross roads. With Streetview I checked Butler Creek Rd, which goes under I90. It has 13'6" signs. So you are fine on I90.

US93 goes over, without any warning signs.

16 ft is the standard for Interstates (with limited urban exceptions).

CA Traveler wrote:
Perhaps Google Maps can help by showing what roads cross. I thought 13' 2" was a common truck height and with your height caution is warranted.

Stock height for a standard semi trailer is 13' 6".

When setting bridge heights, we typically provide a little margin for error.

I won't go so far as to say it can't be but I would be surprised to see a 13'6" bridge on an interstate. It's been decades since such a low height was acceptable on the interstate system.

Do you have the name of the cross road? It would be fairly simple to check on google's street view and see what it looks like.

Two other thoughts:
- If it really is that low, they probably have signs for an alternate route in place.
- The height listed is the lowest point of the crossing. Often that only impacts one lane. The other lanes (or shoulder) may be higher.

I just double checked and ours is 13'4" which will be a close call!

Perhaps Google Maps can help by showing what roads cross. I thought 13' 2" was a common truck height and with your height caution is warranted.

Good point! On my app it just states "13'6" low clearance bridge so thought I ask. It would be great if they told you over or under, but it just has a yellow warning triangle in position on the I90 intersection. I'm new to RVing and new to using that particular app but I can't imagine any other route to take to West Glacier.
I'll try to call Montana Transportation though, just incase!
Thank you!

Don't know but is that the clearance under or over the I90 road?