Past WA 529 (see big link at bottom), here are some NB I-5 references at 116 St. NE in Kruse, WA 531 in Arlington, and Anderson Rd. in Mount Vernon. Between those, there's a railroad truss to my west over Cook Slough of the Stillaguamish River.


I arrived in Washington at a unique time: a week after the I-5 Skagit River Bridge collapse on May 23, 2013. An oversized truck hit a fracture-critical member of one of the trusses, resulting in its collapse (and damage to another truss chord it had grazed previously). With I-5 closed, old US 99 was the nearest alternate that I happened to be following anyway, so with the relatively light traffic at 6 AM on a Thursday, I was able to get some decent photos of an incomplete Interstate highway and the ongoing work to clear the rubble as quickly as possible and rebuild the truss span. An emergency Acrow span was jammed into place until the permanent solution could be constructed and the bridge was reopened on June 19, so I had a tight window to hit for these photos.

A brief visitor along for the NB ride.


NB across the 1934 Samish River bridge.


Continuing north past Lake Samish Rd. in Alger to an obvious divergence of old US 99 from the through road, a Pacific Highway dead-end off of Nulle Rd.


Driving this old alignment to its NB conclusion, then turned around back to Nulle Rd.


Samish Way SB from I-5 NB Exit 246. Can you spot the old alignment?


Doing the same thing on this one, south to its end and then back north to Samish Way. You can make out the ancient US 99 centerline in the 2nd photo.


These may be the farthest north application of Botts' dots, near Lake Padden.


Old US 99 NB bears left from Ellis St. onto Holly St. in Bellingham.


NB across Whatcom Creek on the 1920 Pickett Bridge, then looking back south from Dupont St. This crossing is named for the Army Captain who oversaw construction of the original 1857 crossing, George E. Pickett. Given the name and the time, you may not be surprised to learn that this is the same Pickett who led the ill-fated Pickett's Charge for the Confederacy in the Battle of Gettysburg. But you might be, given the geographical separation of Bellingham from the CSA. All this came about because Pickett was placed in charge of the construction of Fort Bellingham in 1856, and this was part of the route there.


W. Maplewood Ave. EB at Northwest Ave. (2 photos), then WB away from there. Clearly Maplewood Ave., a.k.a. former US 99 (which you probably guessed), once curved right into Northwest Ave. instead of left to a 90° intersection.


Old Portal Way SB from I-5 Exit 263 until I can go no further, with the US 99 centerline very visible in the 2nd photo. The last photo is where the old alignment was heading, the 1955 Nooksack River Bridge that now carries both lanes of I-5 NB.


Back north to the modern Portal Way alignment.


Last licks on this page is the 1928 Dakota Creek bridge just south of Blaine, NB.

Back south on former US 99 to WA 529, former US 99
To I-5, with some US 99 bridges

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