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III. TRANSPORTATION ANALYSIS 'l'be Tecbnical Committee prepared two study maps that provided baseline assumptions tor traffic demand study. Hap II sbows lID allumed year 2000 tunctional road network. This road system shows tbe Metropolitan Highways (Interstate Freeways and Major Arterials) whicb are committed in long-range regional and state plans. To test the alternative rinr crossings, the year 2000 torecast was loaded onto the network. TII 610 west ot the Osseo Bypass, bowever, was not included in the network. Map 5 sbows the location ot all the river crossings that were tested in the 2000 tratfic demand analysis. The initial eight crossings alternates were expanded witb two additional alternates to determ1ne the ettect ot providing a bypass to TII 169. This required additional tratfic torecasts, prepared by MnIDOT. Bridge 3 (So DiBlllond Lake Rd - Thurston Av) and Bridge 6 (CR 111 - Riesling Bl) were changed in the computer forecast by providing taster speeds. This tested the ability ot these two alternates to dinrt trips frolll TR 169. The numbers and named locations of all alternates are listed in Table 2. Also assumed in the demand analYSis were the construction of additional lanes on 1-6911 and the completion ot TII 610, but no changes to TII 101 or TII 169. Alternative No. 11 was added to the analysis at MnIDOT's descretion. 'l'be Technical Collllll1ttee alternatives did not go south of 85th Avenue in Brooklyn Park. Table 2 BRIDGE CROSSINGS TESTED Bridge Ro. Location 01 TH 101 SE of Elk River 02 CR 121 - Armstrong Blvd 03 So Diamond Lake - Thurston Av 03B So Diamond t.ake - Thurston Av 011 TH 169 - Ferry Street 05 CR 103 - 7th Avenue 06 CR 111 - Riesling Blvd 06B CR 111 - Riesling Blve 07 Roble Av - Crooked Lake Blvd 08 109th Av - Hanson Blvd 09 TH 610 10 85th Av - Osborn Rd 11 73rd Av - Mississippi St 12 1-6911 Speed 3 50 110 35 110 30 35 .35 110 35 35 115 35 35 40 Bridge Type Existing 1 Study Alternate 2 Study Alternate Study Alternate Existing Study Alternate Study Alternate Study Alternate Study Alternate Study Alternate Under Construction Study Alternate Study Al'1rnate Upgraded Notes: 1. Existing (1985) geometry on THl0l, TH169, TH610. proposed geometry on 1-6911 upgraded to 6 lanes. 2. Assume all study alternate crossings to have 4-lane, undivided, . partiallY controlled access with lett turn lanes at major. intersections. Capacity approx1lllatelY 1300 vph for major approach. Directional split set at 601'10. 3. Service level is reflected in assumed speed. The speed shown in Table 2 includes both the bridge and critical approaches. 12 '29 ~