I49 in LA

[bugo]

I-49 is intended (among other things) to be a hurricane evacuation route from NOLA to points north, so it's absolutely appropriate to be signed N-S. US 90 is signed E-W and runs along I-49 so it can be the E-W highway along the corridor.

[codyg1985]

You could change the signed cardinal direction to East-West at some point and then there would be no "wrong way" section.

I agree, the 0 mile point could still be in New Orleans but sign I-49 as east-west between Lafayette and N.O., the world won't stop just because prevailing instances have east-west highways with their 0 mile point in the west.

I-69 switches from N-S to E-W at the northern interchange with its concurrency with I-96, even though it could conceivably stay signed as N-S to I-75 in Flint.  I cannot think of a precedent on the interstate system where an E-W highway has its 0 mile point in the east, but in Ontario the MTO did not hesitate to start 417 in the east.

Don't forget I-75 west of Miami where it is east-west.

[NE2]

Don't forget I-75 west of Miami where it is east-west.

Not on most signs.

I-76 in Nebraska is signed north-south.

[vtk]

You could change the signed cardinal direction to East-West at some point and then there would be no "wrong way" section.

I agree, the 0 mile point could still be in New Orleans but sign I-49 as east-west between Lafayette and N.O., the world won't stop just because prevailing instances have east-west highways with their 0 mile point in the west.

I cannot think of a precedent on the interstate system where an E-W highway has its 0 mile point in the east

New York State Thruway says hi.

[yakra]

Its 0 mile point is in the *south*, is it not?

Yeah yeah, okay, I-90.
Though, how are the Albany and Berkshire Spur bits mileposted?

[apjung]

IMHO I-49 should be signed E/W from NOLA to Morgan City at the Atchafaylaya River Bridge where signs would mention the change to N/S.

[Anthony_JK]

Since I-49 South is expected to remain cosigned with US 90 and US 90Z (formerly US 90 Business) for most of its entire length, I'm guessing that the W-E orientation of US 90 will be covered by adding US 90 shields on the highway. Still, I'm guessing that unless they are using US 90 mileposts from south of Lafayette to Westwego, they will simply reset milepost 0 at the Claiborne Ave/I-10/Ponchatrain Expy interchange in NOLA (or, as I call it, the "MBWD" Interchange, as in, Mercedes Benz-WhoDat in honor of the Superdome nearby), and add 143 to the exit counts for existing I-49. Since US 90 is itself a major multistate US highway, I hardly think it will be truncated any time soon.....though I would make a decent case for realigning it on its old route on which is now LA 182/Old Spanish Trail.

[bugo]

US 90Z? When did this happen? Is the road fully signed as US 90Z?

[Anthony_JK]

Actually, the Westbank Expressway is currently signed as US 90 Business or US 90B....but in official LADOTD documents, it's designated as US 90Z, with a silent cosign as I-910.

[NE2]

It's just Anthony being incorrectly anal.

[jbnv]

silent cosign

If it's cosigned, it's not silent.

[Anthony_JK]

It's just Anthony being incorrectly anal.

I meant a hidden designation as I-910. What the hell ever, NE2.

[NE2]

"US 90Z (formerly US 90 Business)" is total bullshit.

[Rothman]

silent cosign

If it's cosigned, it's not silent.

Maybe it's a silent cotangent.

[bugo]

silent cosign

If it's cosigned, it's not silent.

Is it silent but deadly?

[Anthony_JK]

"US 90Z (formerly US 90 Business)" is total bullshit.

I'll toss that statement to LADOTD; they made the designation, not me.

[NE2]

Toss that statement in the rubbish bin. US 90 Business is not former.

[Avalanchez71]

Why US 90 Business in the first place?

[yakra]

You lot are tossers.

[Anthony_JK]

Why US 90 Business in the first place?

Because US 90 was already routed through the Huey P. Long Bridge, Jefferson Highway, Claiborne Avenue, and Broad Street; and some designation was needed for the Westbank Expressway in order to give US highway mileage to the Westbank connection to downtown NOLA.

[bugo]

Don't get me wrong, I think it's awesome that US 90B exists as a freeway, but wouldn't a bypass US 90 be more appropriate?

[codyg1985]

Or, just flip the designations around since US 90 Business makes more sense on the route that current US 90 takes?

[jbnv]

Or, just flip the designations around since US 90 Business makes more sense on the route that current US 90 takes?

Or just move US 90 onto the Westbank Expressway, the CCC, the Pontchartrain(?) Expressway and I-10 to Chef Menteur, and decommission the route on the surface streets.

[kendancy66]

Since I-49 South is expected to remain cosigned with US 90 and US 90Z (formerly US 90 Business) for most of its entire length, I'm guessing that the W-E orientation of US 90 will be covered by adding US 90 shields on the highway. Still, I'm guessing that unless they are using US 90 mileposts from south of Lafayette to Westwego, they will simply reset milepost 0 at the Claiborne Ave/I-10/Ponchatrain Expy interchange in NOLA (or, as I call it, the "MBWD" Interchange, as in, Mercedes Benz-WhoDat in honor of the Superdome nearby), and add 143 to the exit counts for existing I-49. Since US 90 is itself a major multistate US highway, I hardly think it will be truncated any time soon.....though I would make a decent case for realigning it on its old route on which is now LA 182/Old Spanish Trail.

What does the Z in US 90 represent?

[yakra]

ZOUNDS!