07-056 - WA State Department of Transportation (WSDOT) - I-405 Widening Project Cooperative Agreement

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GCA 5099 8 of 8 319 EXHIBIT A 320 GENERAL PROJECT DESCRIPITON 321 322 General elements of the PROJECT in Tukwila include the following. 323 o Add one general purpose lane northbound and southbound on I -405 from the I -5 324 Interchange to the eastern CITY limits. 325 o Add approximately one foot of width to each side of the 1 -405 Bridge over the 326 BNSF Railway and Union Pacific railroads 327 o The widening described above is anticipated to widen the existing I -405 roadway 328 without rebuilding the 61 Avenue Bridge, the 66 Avenue Bridge, any of the 329 bndges over the Green River or the I -405 Bridge over SR 181 It is anticipated 330 that non standard lane and shoulder widths will be incorporated on 1 -405 through 331 Tukwila. 332 o Rebuild the on -ramp between Tukwila Parkway and northbound I -405 333 o Construct a drainage pond within the I- 405/1 -5 Interchange. 334 335 For informational purposes, the other elements of the PROJECT in Renton include the 336 following: 337 o Add one general purpose lane northbound and southbound on 1 -405 from the 338 eastern Tukwila city limits to SR 167 339 o Add one general purpose lane northbound and southbound on I -405 from SR 167 340 to SR 169 341 o Extend the southbound auxiliary lane on SR 167 from I -405 to the SW 41 Street 342 exit and extend the southbound SR 167 High Occupancy Vehicle lane north to I- 343 405 344 o Minor widening of the 1 -405 Bridge over Talbot Road. 345 o Reconstruct the existing Benson Road Bridge. 346 o The widening described above is anticipated to widen the existing I -405 roadway 347 without rebuilding the Lind Avenue Bndge, the 1 -405 Bndge over SR 167, the 348 Cedar and Renton Avenue bridges, or the bridge over the Cedar River It is 349 anticipated that non standard lane and shoulder widths will be used on I -405 350 through Renton.