National Boards > Bridges
Proactive Bridges
roadman65:
https://goo.gl/maps/9Q9UDFTd1PWB1HVc8
This one here in Lakeland is ready from conception that someday FL TOLL 580 will be widened.
Osceola Parkway over World Drive in WDW was built that way and since been used to widen the Parkway above.
Rothman:
--- Quote from: roadman65 on May 11, 2023, 03:50:30 PM ---https://goo.gl/maps/9Q9UDFTd1PWB1HVc8
This one here in Lakeland is ready from conception that someday FL TOLL 580 will be widened.
Osceola Parkway over World Drive in WDW was built that way and since been used to widen the Parkway above.
--- End quote ---
Lots of bridges nowadays are rehabbed or built with the idea of expansion happening sometime in the future.
Max Rockatansky:
When US 299 was realigned over the Whiskeytown Reservoir the bridge was built with room to expand to four lanes. US 299 has been gone since 1964 and that bridge as part of CA 299 sits waiting to be expanded.
Bruce:
The westbound I-90 floating bridge was built in 1988 with a center express lane that would be convertible to some form of transit use, as part of agreements between various governments. It is now being converted for light rail, set to open in 2025 or a bit later (depending on how fast the contractors can unscrew their screwup). The new Evergreen Point/SR 520 floating bridge has a similar design addition that would allow for light rail with a few additional pontoons, but I'm not clear on what exactly this would entail.
Bitmapped:
I've seen a number of cases in the past 30ish years where PennDOT and the Pennsylvania Turnpike Commission have built bridge piers and/or abutments wider to facilitate potential future expansion. One example that comes to mind is the McClaren Road overpass of I-376 near the Pittsburgh airport: https://goo.gl/maps/QySK31zwg8UnSWwt7
You can also see this along the Southern Beltway (PA Turnpike 576) and portions of the Mon-Fayette Expressway (PA Turnpike 43). Here is an example from the portion of the Southern Beltway that opened last year: https://goo.gl/maps/adkYWWLVGx5otAHG8
PennDOT designed the piers and abutments at the northern end of the US 219 Meyersdale Bypass to facilitate widening the bridges when the the freeway was extended north. They took advantage of this when the extension to Somerset was built several years ago: https://goo.gl/maps/ZLNWCnmc8LinXgXc6
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