THE STATE OF THE ALASKA DEPARTMENT OF TRANSPORTATION & PUBLIC FACILITIES prepared for The House Transportation Committee February 5, 2008 Central Region g Gordon C. Keith, P.E. Regional Director
Central Region Includes • Anchorage • Mat-Su Mat Su • Kenai Peninsula • Kodiak Island • Bristol Bay • Alaska Peninsula • Kuskokwim Delta K k k i D lt • Aleutians/Pribilofs
Central Region M j Major Highways Hi h Parks Highway (MP 0-163) Seward Highway (all 118 miles) Sterling Highway (all 138 miles) Glenn Highway (MP 0 to 109) 109 rural airports 6 harbors 5,400 paved road lane miles 975+ miles of gravel roads ~300 bridges
Central Region Where population growth outruns road improvements Central Region has • 64% of Alaska’s population • 3 of the 4 fastest growing communities in the state As a result, Central Region has Alaska’s greatest problems with • Congestion • Accidents • Ruts High Population } Limited Road System CONGESTION Accidents Ruts
Central Region, State of Alaska, DOT/PF: Top 10 Congestion Bottlenecks 1/26/07 set Function Problem Needed Solutions Bottleneck ID Improvement Annual Added Annual Benefit / Volume veh/day Min Lanes Signals per Bottleneck Capacity LOS Annual Hrs Annual v/c ratio Projects Costs Length mi Delay Crash Costs mi E Delay (1,000's) crashes Cost (1,000's) (1,000's) (1,000's) Glenn Hwy to Seward Urban Freeway Break Cut and cover controlled access Interstate freeway to freeway connection; Hwy: Boniface Pkwy to Build at-grade frontage roads 1 1.74 $ 22,609 $ 550,000 1.10 36th Ave 5 60,000 4 4 34,500 3,007 $45,000 750 Tudor Rd: Minnesota to NHS Arterial Lack of arterial Complete parallel E/W grid - incl. grid Dowling Road from Abbott Loop Muldoon to Minnesota Dr, Bragaw from 2 1.54 2.59 $27,000 $ 13,565 $ 140,000 Northern Lts to O'Malley Rd, 5.5 53,000 4 2 34,500 1,773 450 Boniface to Dowling Parks Hwy: Wasilla to Rural Overcapacity two Widen to 4 lanes; Parks Hwy Interstate lane, high fatal rate Bypass of Wasilla 3 Big Lake 1.26 0.63 $9,000 $ 1,507 $ 150,000 8.8 17,000 2 0 13,520 585 50 Seward Hwy: Rural Overcapacity, two Widen to 4 lanes or bypass Interstate lane mountains by crossing Turnagain Anchorage to Girdwood 4 Arm to North Kenai Spur Road 1.26 0.77 $27,000 $ 2,412 $ 340,000 27.5 17000 2 0 13,520 1,828 80 (Summer Months) Sterling Hwy: Sterling to Interstate Overcapacity, two Widen to 4 lanes, limit access lane, high fatal rate Soldotna (Summer 5 1.26 1.71 $10,000 $ 1,507 $ 60,000 10.5 17,000 2 0 13,520 698 50 Months) Palmer-Wasilla Hwy: Major Overcapacity two Widen to 4 lanes; Complete Arterial lane, high fatal rate parallel Bogard-Seldon Corridor Palmer to Wasilla as 4 lanes limited access; Widen N/S corridors to 4 lanes - Trunk 6 1.22 $10,000 $ 4,221 $ 130,000 0.98 9.9 16,500 2 0.3 13,520 639 140 Rd limited access, Seward Meridian Rd, and Hyer Rd O’Malley Rd: Elmore Rd Major Overcapacity, two Widen to 4 lanes; Connect N/S Arterial lane roads to complete grid - Elmore 7 1.18 1.24 to Seward Hwy $1,000 $ 1,507 $ 18,000 2 16,000 2 1 13,520 55 50 Road Jewel Lake Rd: Minor Overcapacity, two Widen to 4 lanes with center left Arterial lane turn lane International to Dimond 8 1.18 $1,000 $ 2,261 $ 20,000 1.46 2.9 16,000 2 1 13,520 78 75 Seward Hwy: 36 th Ave to Urban Interchange Widen to 6 lanes for weaving Interstate capacity, weaving between interchanges; Complete O’Malley Rd E/W collectors across freeway at 9 1.05 0.98 4.5 60,000 4 0 57,375 751 $11,000 400 $ 12,058 $ 210,000 International, 68th, 76th, 92nd Avenues. Minnesota Dr: Hillcrest NHS Arterial Intersection Cut and cover controlled access capacity freeway to freeway connection; Dr to Tudor 10 0.87 0.70 $20,000 $ 3,618 $ 300,000 3 45,000 6 2 51,800 1,353 120 Build at-grade frontage roads 1.22 1.05 TOTAL 79.6 317,500 259,295 10,769 $ 161,000 2,165 $ 65,264 $ 1,918,000 Avg miles veh/day veh/day hrs/yr 14% of State Totals * $15/hr value of lost time delay avg, Delay costs exclude costs of fuel, air quality, and vehicular wear and tear List Generated at the Request of FHWA Alaska Division Safety Corridor Designated * Freeway Capacity based upon adjusting to 70/30 split * 60% crash and delay reduction assumed with improvements Safety Corridor Candidate, Under Consideration * Weighted KABCO crash costs per DOT proportion of KABCO crashes on NHS Routes
Highway Safety Corridors • Established by Alaska Statute 19.10.075 • Implemented by Section 28.17 of the Alaska Traffic Manual Designated: Seward Highway, MP 87-117 – May 26, 2006 Parks Highway, MP 44-52 – October 16, 2006 To be Designated: Knik-Goose Bay Road – May 2008 Sterling Highway, Scout Lake to Soldotna – May 2008 Palmer-Wasilla Highway – Summer 2008 Preliminary Results Seward Highway Parks Highway Crash Rate Before Implementation 13.10 per 100 MVM 17.30 per 100 MVM Crash Rate After Implementation 1.22 per 100 MVM 10.36 per 100 MVM % Reduction 90.7% 40% Crashes Per Year Before Implementation 16.45 6.82 Crashes Per Year After Implementation 1 3 % Reduction 93.9% 56% MVM = Million Vehicle Miles Seward Highway – September 25, 2005 Seward Highway – September 25, 2005
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