Pergolas

[J N Winkler]

Are there other examples of pergolas in North America besides the ones built into the I-5/SR 2 (Golden State Freeway/Glendale Freeway) interchange in Los Angeles?

SR 2 southbound to I-5 southbound transition

This example surfaced earlier today on the Freeways in Los Angeles Facebook group and it is the first American example of a pergola I can remember ever seeing, although this form of construction is used quite extensively in Spain, with many, many examples across multiple regions:

AP-7/C-58 interchange near Barcelona

A-7/A-44 interchange near Motril

BU-30 over railway northeast of Burgos

[Grzrd]

GA 400 at Lenox Road in Atlanta

Buford-Spring Connector at GA 400 in Atlanta

[cbeach40]

Couple of Ontario examples at railways:

Highway 403, Brantford
Gardiner Expressway, Toronto

[TEG24601]

If I'm understanding the question and examples, that is how much of the interface between the I-5 main line and the Express Lanes is handled under the Convention Center in downtown Seattle, as well as the Alaskan Way Viaduct.


Or are you meaning for decoration only?

[CtrlAltDel]

Does this count?
https://www.google.com/maps/@36.0740039,-96.055464,3a,75y,85.93h,105.36t/data=!3m6!1e1!3m4!1ssW5ElScb6agSwKaQA-U2jw!2e0!7i13312!8i6656!6m1!1e1

(I-44 at OK-66 near Sapulpa, OK)

[DRMan]

Boylston St. over I-90/Mass Pike in Boston
https://www.google.com/maps/@42.3475548,-71.0876128,3a,75y,89.48h,81.79t/data=!3m6!1e1!3m4!1sDV6-TxFeIr9Ww6mwoRPeKw!2e0!7i13312!8i6656

[J N Winkler]

Just to thank you all for the examples supplied so far--it seems pergolas are more common in North America than I had thought, though perhaps not nearly as frequently encountered on a per-centerline-mile basis as in Spain.

If I'm understanding the question and examples, that is how much of the interface between the I-5 main line and the Express Lanes is handled under the Convention Center in downtown Seattle, as well as the Alaskan Way Viaduct.

Or are you meaning for decoration only?

I looked at I-5 under the Convention Center and SR 99 (I presume through the Battery Tunnel) and it seems the concept is structurally pretty similar, with deck lids in both cases supported by transverse stringers resting on walls.  But the classic pergola (for which the term in Spanish is the clearly cognate pérgola, a word that is also used to refer to pergolas in the gardening sense; I'm not sure what formal term, if any, is used in English) supports a crossing at extreme skew with stringers left exposed where they are not covered by the overhead facility.

Does this count?

https://www.google.com/maps/@36.0740039,-96.055464,3a,75y,85.93h,105.36t/data=!3m6!1e1!3m4!1ssW5ElScb6agSwKaQA-U2jw!2e0!7i13312!8i6656!6m1!1e1

(I-44 at OK-66 near Sapulpa, OK)

I think it's an edge case.  These are straddle bents and are another way to handle skew crossings.  I suspect, though (not having seen the construction plans), that each leg has its own footing, whereas every pergola for which I have seen plans has had both sides of the "box" supported on a common footing.

[mrsman]

Does this count - NJ 139 in Jersey City:

https://www.google.com/maps/@40.7326219,-74.0536077,3a,75y,313.67h,83.74t/data=!3m6!1e1!3m4!1sYINYiKoAd5oYZ2htTbrMsQ!2e0!7i13312!8i6656!6m1!1e1

[J N Winkler]

Yup!

[Chris]

They are fairly common in the Netherlands.

This one is located on A4 between Amsterdam and The Hague, where the freeway crosses the high-speed rail line. Notice how it was built with a future expansion to 10 lanes in mind.

[Tom958]

I've never heard that term before. I like it, though.

My first reaction was, "Those things are all over the place in Atlanta," but some of the ones that popped into my mind were actually covered, including four for the ramp braids at I-85 and Sugarloaf Parkway not far from my house. I think the largest one might be at the SPUI at Lenox and GA 400:

https://www.google.com/maps/@33.8519223,-84.369966,290m/data=!3m1!1e3

There's another at the SPUI at Sugarloaf and New Hope Road:

https://www.google.com/maps/@33.932,-83.9410335,259m/data=!3m1!1e3

[hm insulators]

Are there other examples of pergolas in North America besides the ones built into the I-5/SR 2 (Golden State Freeway/Glendale Freeway) interchange in Los Angeles?

SR 2 southbound to I-5 southbound transition

What about the structure on eastbound I-210 just before Santa Anita Avenue in Arcadia that holds the Metro-Link tracks? Would that be a pergola?

Incidentally, I didn't know that's what it's called.

[Road Hog]

If you're just talking about external support structures to prevent a pier from being plopped down in the middle of a main lane, these are all over the Metroplex.

[mgk920]

WI 794 (Lake Parkway) under Union Pacific's ex CNW 'KRM' line and St Francis Ave in Saint Francis (suburban Milwauke), WI

https://goo.gl/maps/hqgHnK25d3k

Mike

[Chris19001]

The Philly area has several as well..  I276 over PA132, and I76 under the freight line between exits 348 & 347 are the obvious ones.

[Roadrunner75]

https://www.google.com/maps/@42.1587152,-87.8737773,3a,66.8y,356.43h,90.63t/data=!3m4!1e1!3m2!1sg-6GKs3O6GoRLWjhVD11qQ!2e0?force=lite

https://www.google.com/maps/@39.956477,-75.1474681,3a,66.8y,7.27h,92.89t/data=!3m4!1e1!3m2!1sH2FLYcUuonrt25yaJ8Enbw!2e0?force=lite

And depending on your definition...
https://www.google.com/maps/@39.8974384,-75.1870766,3a,66.8y,264.89h,89.61t/data=!3m4!1e1!3m2!1swHwK0a-qD9LDO0OTH-JoPw!2e0?force=lite

[Michael]

Here's a few from NY:

I-81 southbound over US 11 in Mattydale (the southern half goes under the northbound I-81 bridge)

I-190 in Buffalo

This one in Lockport isn't an open pergola, but it's the widest bridge deck I've ever seen.  According to Uglybridges, it's 399 feet wide.

[Roadrunner75]

If we're considering 'closed' pergolas, then, here's one you might want to think twice about driving under...
https://www.google.com/maps/@39.9403064,-75.1863875,3a,92.8y,105.14h,96.97t/data=!3m4!1e1!3m2!1suoAxZ2SLuqSb_LUBltUrhQ!2e0?force=lite
https://www.google.com/maps/@39.9402846,-75.1858269,3a,55.4y,321.89h,115.5t/data=!3m4!1e1!3m2!1sofgcSlg39IHOfpIlub_G9A!2e0?force=lite

[thefraze_1020]

There is a railroad bridge over US 2 near Gold Bar, WA that kind of counts.

https://www.google.com/maps/@47.834214,-121.6473993,3a,75y,76.92h,78.1t/data=!3m6!1e1!3m4!1sM0ZCSP5WQceZHBs-13mGYQ!2e0!7i13312!8i6656?hl=en

[amroad17]

They are fairly common in the Netherlands.

This one is located on A4 between Amsterdam and The Hague, where the freeway crosses the high-speed rail line. Notice how it was built with a future expansion to 10 lanes in mind.

That is a great photo!

[Bigmikelakers]

There's one at the 261/241 transition in Orange County:

https://www.google.com/maps/@33.7831388,-117.7475251,3a,75y,52.23h,85.27t/data=!3m6!1e1!3m4!1slQU9angoEDYBtuptu333QQ!2e0!7i13312!8i6656!6m1!1e1

[myosh_tino]

There is also one on the I-5 southbound where eastbound CA-60 crosses over it...

https://goo.gl/maps/dxpFwjJ9C822

[hm insulators]

If we're considering 'closed' pergolas, then, here's one you might want to think twice about driving under...
https://www.google.com/maps/@39.9403064,-75.1863875,3a,92.8y,105.14h,96.97t/data=!3m4!1e1!3m2!1suoAxZ2SLuqSb_LUBltUrhQ!2e0?force=lite
https://www.google.com/maps/@39.9402846,-75.1858269,3a,55.4y,321.89h,115.5t/data=!3m4!1e1!3m2!1sofgcSlg39IHOfpIlub_G9A!2e0?force=lite

That one has seen better days, hasn't it?

[jakeroot]

I think this might be an example: Chilliwack, BC, Evans Road overpass: https://goo.gl/grgGvD

[sparker]

Nice example on CA 99 at Livingston, on a S-curve that takes the freeway under the UP (former SP) SJ Valley main line.  It opened circa 1997, replacing one of the more tight & narrow 4-lane underpasses on 99.