Washington State Route 525
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| State Route 525 Auxiliary route of  I-5 |
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| Defined by RCW 47.17.735, maintained by WSDOT | |||||||||||||
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| Length: | 30.67 mi[1] (49.36 km) | ||||||||||||
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| Formed: | 1964 | ||||||||||||
| South end: |  I-5/I-405 in Lynnwood |
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| Major junctions: |
 SR 99 in Lynnwood  SR 525 Spur in Mukilteo SR 526 in Mukilteo |
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| North end: |  SR 20 near Coupeville |
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State Route 525, commonly abbreviated as SR 525, is a state highway in the U.S. state of Washington. It extends almost 31 miles from Lynnwood in the east to an area near Keystone in the west, not counting a portion that is carried by the Washington State Ferries run from Mukilteo on the mainland to Clinton on Whidbey Island.
On Whidbey Island, it is known as The Highway. In Mukilteo, it is known as Mukilteo Speedway,
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[edit] Route description
SR 525 begins as a freeway, incorporating lanes extending from the northern terminus of Interstate 405 and ramps from its junction with Interstate 5 near Alderwood Mall in Lynnwood. From there it travels due north toward an overpass (built in 2000) over and interchange with State Route 99. From there, 525 becomes a boulevard, the Mukilteo Speedway, and travels through the commercial and industrial areas of south Mukilteo, past Paine Field. At the end of the boulevard section, 525 splits. The main route heads to Whidbey Island via ferry, and a spur, also known as Paine Field Boulevard, links 525 to State Route 526, bypassing many signals and other roads while also shortening the route for people traveling to Everett and Boeing's Paine Field Plant.
As SR 525 heads northwest from the split, it shrinks to a two-lane city street until it reaches the western terminus of 526. There, a central left-turn lane is added. As 525 makes its way down the embankments of Mukilteo toward the ferry terminal, it loses its turn lane and gains a ferry holding lane. (Travel in the holding lane is not permitted unless a backup has formed.) At Goat Trail Road, the ferry holding lane becomes a lane for ferry traffic only. (All vehicles bound for the ferry must use the lane, and one may not enter the lane from that point on.) Traffic for Whidbey Island is funneled into a holding area, while local traffic may continue to the waterfront. (Both the holding area and the local street carry the designation of SR 525.)
On the Whidbey Island side, 525 climbs a 7% grade, which sometimes causes new drivers of manual transmission vehicles to stall. Once the grade levels to about 2%, the now four-lane highway plus central turn lane runs through Clinton. Just north of Clinton, the highway narrows again to two lanes and becomes a rural highway. It travels westward through the communities of Bayview and Freeland before turning north. It then passes through Greenbank and ends at its junction with State Route 20 in Keystone, just west of which is the ferry dock for Port Townsend on the Olympic Peninsula.
[edit] History
- Prior to the 1964 Highway Renumbering, SR 525 on Whidbey Island was known as SSH (Secondary State Highway) 1-D, and it extended north to Anacortes. When the North Cascades Highway was completed in the early 1970s, State Route 20 was extended. It replaced SR 525 from Anacortes to Keystone and then was carried over the Keystone-Port Townsend ferry route to the Olympic Peninsula.
- On the Mainland, SR 525 was known as SSH-1I, which traveled the Speedway to Mukilteo Blvd. and was then routed into Everett to an intersection with Broadway (US 99/SR 99). The section of SSR 1I from Mukilteo to Everett became State Route 526 after the great renumbering. Later it was moved to its current freeway route.
- Prior to the completion of Interstate 5 and Interstate 405 SSH-1I had its eastern terminus at U.S. Route 99 (aka PSH-1, now SR 99). After I-5 was completed, SSH-1I was extended to the freeway over local roads until 1980.
- From 1980 to 2001 SR 525 used a 1/2-mile section of SR 99 to connect the Mukilteo Speedway section to the freeway section from I-5. This was deemed a bottleneck in traffic, and was replaced with the current overpass structure.
- Prior to a construction project from 2000 to 2004, SR 525 was two lanes wide, with a left-turn lane from SR 99 to Paine Field Boulevard.
[edit] Related routes
There is one bannered route of SR 525, called State Route 525 Spur, commissioned in 2001,[citation needed] which connects with State Route 526 near Paine Field.
Paine Field Boulevard / SR 525 Spur begins at a Y-Intersection with SR 525 just outside of the residential areas of Mukilteo, Washington. It then travels north about 1.2 miles (2 km) to its terminus at SR 526. During its entire length, there are no intersections, save for the termini, and the speed limit is set at 45 miles per hour (72 km/h).
Paine Field Boulevard was created in 1999 to facilitate traffic flow to and from Boeing's Paine Field manufacturing facility by ensuring that it no longer interferes with ferry traffic on SR 525 bound for Whidbey Island. Also, many people working at Paine Field live in the Mukilteo neighborhood of Harbour Pointe, and this new route allows for more direct travel between work and home. Boeing also has an engineering facility in Harbour Pointe, so the logic of a more direct route for the engineers to travel to the plant becomes apparent.
State Route 525 Spur is 0.86 miles (1.38 km) long.[2]
[edit] Major intersections
| County | Location | Mile[1] | Destinations | Notes |
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| Snohomish | 0.00 | I-405 south – Bellevue, Renton |
Continuation beyond I-5 | |
| 0.00 | I-5 south – Seattle |
No connection between Southbound I-5 and Northbound 525 nor between Southbound 525 and Northbound I-5 | ||
| 0.62 | Alderwood Mall Parkway | Exit Only, utilizes additional lane that arrived at I-5 Interchange | ||
| 2.74 | SR 99 – Lynnwood, Everett |
Utilize surface streets for North 525 to South 99, South 99 to North 525, and South 525 to North 99 | ||
| North end of freeway | ||||
| Mukilteo | 5.77 | To SR 526 (via SR 525 Spur) – Everett, Seattle |
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| 6.68 | SR 526 east to I-5 – Everett, Seattle |
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| 8.64 | Mukilteo-Clinton Ferry across Puget Sound | |||
| Island | ||||
| 30.68 | SR 20 – Coupeville, Anacortes Ferry, Port Townsend Ferry |
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[edit] References
[edit] External links
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| SR 500 - SR 501 - SR 502 - SR 503 (Spur) - SR 504 (Spur) - SR 505 - SR 506 - SR 507 - SR 508 - SR 509 - SR 510 - SR 512 - SR 513 - SR 515 - SR 516 - SR 518 - SR 519 - SR 520 - SR 522 - SR 523 - SR 524 (Spur: Edmonds, Lynnwood) - SR 525 (Spur) - SR 526 - SR 527 - SR 528 - SR 529 (Spur) - SR 530 - SR 531 - SR 532 - SR 534 - SR 536 - SR 538 - SR 539 - SR 542 - SR 543 - SR 544 - SR 546 - SR 547 - SR 548 - SR 599 | |
| Former or proposed state routes: SR 514 - SR 537 - SR 540 | |
