Exit numbers milebased but every number used

[roadman65]

In Essex County, NJ I-280 uses every number from 4-15 which 4 is just east of the Morris County Line (Passaic River). No numbers unused in this county for a mile based exit number scheme.

However the bridge across the Passaic River is at the 3.3 milepost, but if an exit 3 was created it would not be in Essex County.

Any other situations for a ten mile interstate or freeway in one particular county to use exit numbers mile based that coincidentally use every number within its borders.

[NWI_Irish96]

None in Indiana that use 10 consecutive numbers but some that come close:

I-65 uses all numbers from 109-117, a string of 9

I-94 uses all numbers from 1-16 except 4, 7, 8 and 14.
I-65 uses all numbers from 0-9 except 3, 8.
I-465 uses all numbers from 11-21 except 15, 18

[SkyPesos]

I-94 in IL exits 41-63 (22 mi).
I-75 in MI exits 40-63 (23 mi).
I-70 in MO exits 234-249 (15 mi).
I-90 in OH exits 169-190 (21 mi).
I-71 in OH exits 104-117 (13 mi). Concurrency with I-70 is short enough that both 106 and 107 is used, despite the concurrency using I-70's exit numbers.

[KCRoadFan]

Having driven up I-35 to Minnesota many a time, I remember that 35W heading into Minneapolis, from the split in Burnsville, has exits of every consecutive number up to at least 16, which is where it meets I-94 downtown. As it is, this actually continues across the river, with 21 being the first exit number not represented on 35W - Exit 20 for New Brighton Boulevard/Stinson Boulevard is followed by Exit 22 for Industrial Boulevard.

In fact, Exit 21 is the only missing exit number on 35W between 1 and 33, the latter of which is for County 17/Lexington Avenue in Circle Pines. North of this point, there's only one more exit on 35W before it merges with 35E to become I-35 again.

(Now that I think of it, MNDOT should probably sign the northbound ramp to New Brighton as Exit 20 and the southbound ramp to Stinson as Exit 21 - that way, all the numbers from 1 to 33 would be represented on 35W!)

[US 89]

There appear to be two cases of 10+ consecutive exit numbers in Utah:

I-15, 303 to 317 (3300 South in South Salt Lake to 500 West in Bountiful)
I-80, 120 to 134 (I-15 north junction in Salt Lake City to SR 65 at Mountain Dell)

Should note that both of those involve a couple of letter suffixes, and also a couple of incomplete interchanges. Southbound I-15 is the only direction in which you will actually see 10 consecutive numbers.

[KCRoadFan]

How many consecutive numbers are represented at the start of I-95 through Miami and South Florida? It probably goes into the 30's or 40's, at least - there are a lot of exits along that stretch.

[hotdogPi]

I-95 in Massachusetts after renumbering has a consecutive stretch from 49-61, although 50A/50B might disqualify it. (I say might because they were 32A/32B sequential despite being unrelated exits.)

I-495, which has not switched over yet, will include 99-109, and 103A/B is fine because they are different directions of the same road.

Even more: I-290 has everything from 13 to 27 (and 11 and 12, but 12 is split into 12A and 12B).

[ran4sh]

On Georgia 10 Loop, which is the 20-mile beltway around Athens GA, every mile from 6 to 15 has an associated exit. But this isn't necessarily a good thing, as some of those ramps are too close together.

The remaining exits on the beltway are 1, 4, (6-15), 18, and 20.

[ftballfan]

US-131 uses 15 numbers in a row in the Grand Rapids area:
74 - 84th St
75 - 76th St
76 - 68th St
77 - M-6
78 - 54th St
79 - 44th St
80 - 36th St
81 - 28th St (M-11)
82 - Burton St / Hynes Ave (NB)
83A - Hall St
83B - Franklin St
84A - Wealthy St
84B (NB only) - Downtown Grand Rapids
85A (SB only) - Market St
85B - Pearl St
86 - I-196
87 - Leonard St
88 - Ann St
89 - I-96

It was "only" 13 in a row before M-6 opened. As part of the M-6 project, the 68th and 76th St exits were renumbered to match closer to the mile markers (originally, 68th St was Exit 77 and 76th St was Exit 76)

[cwf1701]

M-39 uses exit 1-16 for the entire length of the Southfield freeway (16 miles).

[TheHighwayMan3561]

I-94 through Minneapolis and St. Paul into the eastern suburbs has every number 233-251.

[hotdogPi]

While I'm not the OP, I would say that anything that's closer than one per mile also disqualifies it; the idea is that the exits are both mile-based and sequential.

[webny99]

While I'm not the OP, I would say that anything that's closer than one per mile also disqualifies it; the idea is that the exits are both mile-based and sequential.

So if I'm understanding correctly, an A-B situation would count if it's a cloverleaf, but not two diamonds in quick succession?

[hotdogPi]

While I'm not the OP, I would say that anything that's closer than one per mile also disqualifies it; the idea is that the exits are both mile-based and sequential.

So if I'm understanding correctly, an A-B situation would count if it's a cloverleaf, but not two diamonds in quick succession?

Yes.

[formulanone]

How many consecutive numbers are represented at the start of I-95 through Miami and South Florida? It probably goes into the 30's or 40's, at least - there are a lot of exits along that stretch.

Exits 1-12, then 13 is missing, and resumes at 14. It's not for superstitious reasons, it's just that the Golden Glades Interchange is massive.

[21stCenturyRoad]

I-595 uses all numbers 1-12 except for 11

[PHLBOS]

I-95 in PA: Exits 1 through 10

I-93 in MA: Exits 1 through 12

The above-two were unchanged when converted (very recent for I-93) from sequential to mile-marker based.

[hotdogPi]

I-95 in PA: Exits 1 through 10

I-93 in MA: Exits 1 through 12

The above-two were unchanged when converted (very recent for I-93) from sequential to mile-marker based.

Add 295 (ME) exits 1-11 to the "unchanged" list.

[dkblake]

One mile short and there's Exit 4C, but I believe I-890 in NY is technically distance-based with exits that go 1-9.

[kphoger]

While I'm not the OP, I would say that anything that's closer than one per mile also disqualifies it; the idea is that the exits are both mile-based and sequential.

If I ignore this qualification to the OP, then northbound I-35 uses 29 sequential numbers (150 to 178) in Texas–but not all in one county.  The last four are outside Bexar County.  So that would leave 25 within one county.

[jmacswimmer]

I-81 in MD almost pulls it off...has everything between 1 & 10 with the lone exception of 3.

[vdeane]

One mile short and there's Exit 4C, but I believe I-890 in NY is technically distance-based with exits that go 1-9.

Plus 4C is essentially in the same interchange as 4 and 4B (4A/4B was merged into one ramp a few years ago).