Is there any way that a map of double-deck roadways could be made considering there are very few double-decked highways with both decks being roadways left. I don't know any program that could map double-deck roadways besides Google My Maps.
Theoretically a computer program could analyze map data from a source like OSM, but that's a lot of data to analyze, and to my knowledge nobody has written such a program. It's probably easier just to come up with a list the old fashioned way, and then ask someone nicely to make a pretty map of it.
Quote from: vtk on September 04, 2015, 07:56:34 PM
Theoretically a computer program could analyze map data from a source like OSM, but that's a lot of data to analyze, and to my knowledge nobody has written such a program. It's probably easier just to come up with a list the old fashioned way, and then ask someone nicely to make a pretty map of it.
I was thinking that, I'll try making a list in Google My Maps.
https://www.google.com/maps/d/edit?mid=z-VLEHpOEovg.kLwb3P95an2k&usp=sharing
Here's the list, if anyone wants to add another double-deck structure to the list please tell me where it is and I will add it.
Critea for list:
All structures must be double-deck.
Each deck can have whatever on it as long as it is two decks.
Something like I-10's lower and upper level configuration in San Antonio does NOT count as a double-deck road.
I-84 on the Mixmaster Interchange [viaduct] with CT 8 in downtown Watrbury, Connecticut. Eastbound on top, westbound on the bottom. :wave:
I-5 Ship Canal Bridge in Seattle -- do you intend to include this in I-5 Express Lanes? I only ask because both the S.F.-Oakland Bay Bridge and its Yerba Buena Tunnel are listed.
Added both now.
I-64 in St. Louis
I-229 in St. Joseph MO.
Does the pedestrian deck of the Brooklyn Bridge count?
I-280 San Francisco (US-101 to Evans Ave)
Not a freeway or a highway, but Wacker Dr in Chicago puts Express on the Lower, local on the upper.
Quote from: Bickendan on September 04, 2015, 10:04:24 PM
Does the pedestrian deck of the Brooklyn Bridge count?
If I understand the OP, no, because it doesn't carry motor vehicles.
I-880!
...
Oh...wait...
Quote from: vtk on September 04, 2015, 10:40:16 PM
Quote from: Bickendan on September 04, 2015, 10:04:24 PM
Does the pedestrian deck of the Brooklyn Bridge count?
If I understand the OP, no, because it doesn't carry motor vehicles.
Actually it is not a double-decker because the walkway does not cover any part of the roadway. Non-motor vehicle decks are allowed.
W Lake ST, N Wells St downtown Chicago
both over Chicago River, lower deck is roadway, upper deck is the EL
Quote from: TravelingBethelite on September 04, 2015, 09:27:35 PM
I-84 on the Mixmaster Interchange [viaduct] with CT 8 in downtown Watrbury, Connecticut. Eastbound on top, westbound on the bottom. :wave:
CT 8 south of the interchange up to Exit 30 is also double decker.
NJ 21 in Newark just north of where it changes from a surface arterial to a freeway.
Quote from: iBallasticwolf2 on September 04, 2015, 10:47:00 PM
Quote from: vtk on September 04, 2015, 10:40:16 PM
Quote from: Bickendan on September 04, 2015, 10:04:24 PM
Does the pedestrian deck of the Brooklyn Bridge count?
If I understand the OP, no, because it doesn't carry motor vehicles.
Actually it is not a double-decker because the walkway does not cover any part of the roadway. Non-motor vehicle decks are allowed.
Arguably it would rule out I-110's elevated bus/carpool lanes between I-105 and I-10 then.
VA 195 in Richmond? Well that first part of it from I-95.
Both the Fort Pitt (I-376) and Fort Duquesne (I-279) bridges here in Pittsburgh.
The Whirlpool Rapids Bridge, connecting Niagara Falls, New York with Niagara Falls, Ontario. Automobile traffic on the lower level; trains on the upper level.
https://en.m.wikipedia.org/wiki/Whirlpool_Rapids_Bridge
Half credit for PA 248 in Walnutport (https://goo.gl/maps/51oLn)?
In the NYC area you also have the LIE directly east of the BQE. And NJ 139, although the upper deck of that one is presently albeit temporarily nonexistent.
An out of town submission: 12th Street Viaduct in Kansas City.
Quote from: Duke87 on September 05, 2015, 11:31:00 AM
In the NYC area you also have the LIE directly east of the BQE. And NJ 139, although the upper deck of that one is presently albeit temporarily nonexistent.
An out of town submission: 12th Street Viaduct in Kansas City.
One could "count" the BQE itself around Brooklyn Heights but it's more of a tiered highway (the urban equivalent of I-70 through Glenwood Canyon) with a local street/port at base, SB traffic on the second level, NB above it and Brooklyn Heights Promenade topping that, each direction has at least one lane exposed.
The Verrazano-Narrows, 59th Street (Queensboro) Bridge, and the GWB, all have two decks - but the configuration is different in that traffic flows in both directions on both decks. The Queensboro Bridge had former elevated rail on the upper deck converted to road and add to that the very narrow east-bound "sidewalk" lane (outer roadway - Actually a former trolley line opposite the one now occupied by a rec path on the north side of it).
(EDIT: sorry for the repeat :sombrero:)
Complete different topic, the Silver Line Busway and HOT lanes of the 110 are elevated through the USC campus in LA.
Omaha has W. Dodge Rd - with Express lanes elevated over local lanes.
Portions of the Selmon Expressway in Tampa count towards this, as the express lanes tends to stay over top of the mainline.
I-10/I-35 in downtown San Antonio has double deck portions. Also, I-35 between the northern split with I-10 and its interchange with I-37 is mostly double deck.
Is Meridian Bridge still open to cars ?
(don't think so, and IIRC, it was NB on top and SB on bottom, or vice versa)
I-95 Girard Point Bridge in Philly...
Meridian Bridge is ped only now.
At one time, upper level was 2 way for autos and lower was for trains. No train ever passed over bridge, it was reconfigured for cars/trucks both levels.
Lift mechanism was removed in '84 according to Wiki.
Atlanta: West Peachtree St. over I-75/85. Upper deck is the roadway and the lower deck is MARTA rail.
Has the San Rafael bride been mentoned yet? I580 bridge near San Francisco
I-90 west of I-5.
I have added all suggestions that fit the criteria on page 1 of this thread. Some of the suggestions did not fit the criteria or were repeats or already added points.
https://www.google.com/maps/d/edit?mid=z-VLEHpOEovg.kLwb3P95an2k&usp=sharing
Quote from: iBallasticwolf2 on September 04, 2015, 09:04:21 PM
https://www.google.com/maps/d/edit?mid=z-VLEHpOEovg.kLwb3P95an2k&usp=sharing
Here's the list, if anyone wants to add another double-deck structure to the list please tell me where it is and I will add it.
Critea for list:
All structures must be double-deck.
Each deck can have whatever on it as long as it is two decks.
Something like I-10's lower and upper level configuration in San Antonio does NOT count as a double-deck road.
Kansas City, Michigan?? [emoji14]
Quote from: Scott5114 on September 06, 2015, 07:55:03 PM
Quote from: iBallasticwolf2 on September 04, 2015, 09:04:21 PM
https://www.google.com/maps/d/edit?mid=z-VLEHpOEovg.kLwb3P95an2k&usp=sharing
Here's the list, if anyone wants to add another double-deck structure to the list please tell me where it is and I will add it.
Critea for list:
All structures must be double-deck.
Each deck can have whatever on it as long as it is two decks.
Something like I-10's lower and upper level configuration in San Antonio does NOT count as a double-deck road.
Kansas City, Michigan?? [emoji14]
The upper and lower level thing means like the upper level being elevated over the lower level like on the Selmon Expressway. When I mean double-deck I mean like the two decks being on top of each other like the Western Hills Viaduct.
I-490 is a double decker near the western terminus.
I-5 through Seattle is a double decker.
Quote from: noelbotevera on September 06, 2015, 09:24:27 PM
I-490 is a double decker near the western terminus.
I-5 through Seattle is a double decker.
1. I've looked at both I-490's western terminuses, neither are double-deckers.
2. Already got it but thanks!
Quote from: iBallasticwolf2 on September 04, 2015, 09:04:21 PM
Something like I-10's lower and upper level configuration in San Antonio does NOT count as a double-deck road.
I guess I wasn't paying attention. Oops.
That being said, I'm not sure why it wouldn't count.
Quote from: iBallasticwolf2 on September 06, 2015, 09:47:22 PM
Quote from: noelbotevera on September 06, 2015, 09:24:27 PM
I-490 is a double decker near the western terminus.
I-5 through Seattle is a double decker.
1. I've looked at both I-490's western terminuses, neither are double-deckers.
Must've got the wrong picture. I think it might've been OH 176 goes into a double decker near the I-90/I-77/I-490 area.
Here's my picture referral:
https://www.google.com/search?q=double+decker+highway&tbm=isch&imgil=1Jm6jGmMqXSv7M%253A%253B2Ha2LiyWz7-McM%253Bhttp%25253A%25252F%25252Fwww.interstate-guide.com%25252Fi-490_oh.html&source=iu&pf=m&fir=1Jm6jGmMqXSv7M%253A%252C2Ha2LiyWz7-McM%252C_&biw=1079&bih=1005&usg=__zuEMMTheJw2wXi2MqOE8cpPatHk%3D&ved=0CCgQyjdqFQoTCNyi9Jjb6McCFckWPgodRlgC8g&ei=fX_vVZzwL8mt-AHGsImQDw#imgrc=1Jm6jGmMqXSv7M%3A&usg=__zuEMMTheJw2wXi2MqOE8cpPatHk%3D
Quote from: TravelingBethelite on September 04, 2015, 09:27:35 PM
I-84 on the Mixmaster Interchange [viaduct] with CT 8 in downtown Watrbury, Connecticut. Eastbound on top, westbound on the bottom. :wave:
CT-8 is also double decked south of I-84....NB on top, SB underneath between I-84 and Exit 30.
Northeast Expressway (US 1) doesn't count, as the 'double deck' roadway separates into 'side by side' at the end of the Tobin Bridge. Prior to November 2009, when MassDOT was formed and took over the Tobin Bridge, there were 'State Highway Begins/Ends" signs denoting the location.
Quote from: noelbotevera on September 08, 2015, 08:39:52 PM
Quote from: iBallasticwolf2 on September 06, 2015, 09:47:22 PM
Quote from: noelbotevera on September 06, 2015, 09:24:27 PM
I-490 is a double decker near the western terminus.
I-5 through Seattle is a double decker.
1. I've looked at both I-490's western terminuses, neither are double-deckers.
Must've got the wrong picture. I think it might've been OH 176 goes into a double decker near the I-90/I-77/I-490 area.
Here's my picture referral:
https://www.google.com/search?q=double+decker+highway&tbm=isch&imgil=1Jm6jGmMqXSv7M%253A%253B2Ha2LiyWz7-McM%253Bhttp%25253A%25252F%25252Fwww.interstate-guide.com%25252Fi-490_oh.html&source=iu&pf=m&fir=1Jm6jGmMqXSv7M%253A%252C2Ha2LiyWz7-McM%252C_&biw=1079&bih=1005&usg=__zuEMMTheJw2wXi2MqOE8cpPatHk%3D&ved=0CCgQyjdqFQoTCNyi9Jjb6McCFckWPgodRlgC8g&ei=fX_vVZzwL8mt-AHGsImQDw#imgrc=1Jm6jGmMqXSv7M%3A&usg=__zuEMMTheJw2wXi2MqOE8cpPatHk%3D
I've driven on that section of road, and I think that the double-deck portion is going to be/was removed with the reconstruction of the innerbelt.
Not sure if it counts, but the new tolled express lanes on I-635 across north Dallas opened on September 10, and many sections of those have the free lanes running directly above them. There are columns in the center and the beams cross the entire roadway, so it has a very different feel than I-10 in San Antonio or I-35 in Austin, which are basically just really long flyovers.
Quote from: noelbotevera on September 08, 2015, 08:39:52 PM
Quote from: iBallasticwolf2 on September 06, 2015, 09:47:22 PM
Quote from: noelbotevera on September 06, 2015, 09:24:27 PM
I-490 is a double decker near the western terminus.
I-5 through Seattle is a double decker.
1. I've looked at both I-490's western terminuses, neither are double-deckers.
Must've got the wrong picture. I think it might've been OH 176 goes into a double decker near the I-90/I-77/I-490 area.
Here's my picture referral:
https://www.google.com/search?q=double+decker+highway&tbm=isch&imgil=1Jm6jGmMqXSv7M%253A%253B2Ha2LiyWz7-McM%253Bhttp%25253A%25252F%25252Fwww.interstate-guide.com%25252Fi-490_oh.html&source=iu&pf=m&fir=1Jm6jGmMqXSv7M%253A%252C2Ha2LiyWz7-McM%252C_&biw=1079&bih=1005&usg=__zuEMMTheJw2wXi2MqOE8cpPatHk%3D&ved=0CCgQyjdqFQoTCNyi9Jjb6McCFckWPgodRlgC8g&ei=fX_vVZzwL8mt-AHGsImQDw#imgrc=1Jm6jGmMqXSv7M%3A&usg=__zuEMMTheJw2wXi2MqOE8cpPatHk%3D
That is correct. It is a tiny 1/4-mile doubledeck with SR-176 North on the lower deck and I-71 on the upper -- with both routes "ending" at the I-90/I-490 interchange.
Meanwhile, on the other end of the state, you have I-71/I-75 over the Brent Spence Bridge in Cincinnati -- Upper deck Southbound / Lower deck Northbound.
I doubt the Portage Lake Lift Bridge can count because both decks can't be used by motor vehicles at the same time. (The railroad which once served the bridge is gone.) EDIT: Although in winter, it's lowered to the lowest position to allow snowmobiles to cross, so maybe only part-time double-decker for traffic?
Quote from: rawmustard on September 24, 2015, 03:58:43 PM
I doubt the Portage Lake Lift Bridge can count because both decks can't be used by motor vehicles at the same time. (The railroad which once served the bridge is gone.) EDIT: Although in winter, it's lowered to the lowest position to allow snowmobiles to cross, so maybe only part-time double-decker for traffic?
I'd still count it because it is still carries traffic at least a some point every year.
Quote from: yanksfan6129 on September 08, 2015, 08:36:10 PM
Quote from: iBallasticwolf2 on September 04, 2015, 09:04:21 PM
Something like I-10's lower and upper level configuration in San Antonio does NOT count as a double-deck road.
I guess I wasn't paying attention. Oops.
That being said, I'm not sure why it wouldn't count.
I agree. I haven't driven the San Antonio portion in a while to remember, but the Austin portion certainly does have the upper roadway hanging over the lower portion, such that one car is driving directly underneath another.
Mexico City deserves honorable mention, as there is a substantial number of miles of double-decked highway. See the western bypass of the city for a good example (continuation of the Querétaro highway, of which a portion Google Maps actually labels 'Viaducto Elevado Bicentenario', i.e. Bicentennial Elevated Expressway).