THE DIRTBID REGIONAL MODEL · ALASKA
Sitework in Alaska on the same Richmond Metro = 1.00 scale as the rest of DirtBid: 3 cost regions and 30 counties, each with a soil-risk rating from USDA and USGS data. Anchorage Metro runs highest at 1.06×; Rest of Alaska lowest at 1.02×.
Alaska multipliers and county ratings are planning-level: built from federal price and soil data, and not yet checked against local bids or a local estimator. Remote logistics and barging are not in these numbers; add them separately.
Dominant ground: E23-boreal subalpine scrub/meadow mosaic-silty till slopes, Deception, Talkeetna
2 counties in this region. 2 of 2 rate high for shallow rock. Highest risk score: Anchorage Municipality (5 of 10). Remote logistics and barging are not in this multiplier; add them separately.
Counties: Anchorage Municipality, Matanuska-Susitna Borough
Dominant ground: R28-Boreal woodland plains, R28-Alpine dwarf scrub mountains, R28-Boreal woodland mountains
27 counties in this region. 21 of 27 rate high for water table. 19 of 27 rate high for dewatering. Deep frost protection is likely in 9 of 27. Highest risk score: Denali Borough (9 of 10). Remote logistics and barging are not in this multiplier; add them separately.
Counties: Aleutians East Borough, Aleutians West Census Area, Bethel Census Area, Bristol Bay Borough, Chugach Census Area, Copper River Census Area, Denali Borough, Dillingham Census Area, Haines Borough, Hoonah-Angoon Census Area, Juneau City and Borough, Kenai Peninsula Borough, Ketchikan Gateway Borough, Kodiak Island Borough, Kusilvak Census Area, Lake and Peninsula Borough, Nome Census Area, North Slope Borough, Northwest Arctic Borough, Petersburg Borough, Prince of Wales-Hyder Census Area, Sitka City and Borough, Skagway Municipality, Southeast Fairbanks Census Area, Wrangell City and Borough, Yakutat City and Borough, Yukon-Koyukuk Census Area
Dominant ground: Histic Pergelic Cryaquepts, Gilmore, Typic Cryochrepts
1 county in this region. 1 of 1 rate high for water table. 1 of 1 rate high for undercut. Deep frost protection is likely in 1 of 1. Highest risk score: Fairbanks North Star Borough (9 of 10). Remote logistics and barging are not in this multiplier; add them separately.
Counties: Fairbanks North Star Borough
FAQ
From USDA soil survey data, the most common across the state: water table (22 of 30 counties rate high), dewatering (20 of 30 counties rate high), shallow rock (13 of 30 counties rate high). A parcel can differ from its county, so read the survey for your exact site.
From the Commerce Department's Regional Price Parities, on the same Richmond Metro = 1.00 scale as Virginia. Across 29 reviewed regions that method missed by about 0.03 on average. They have not been checked against executed bids in Alaska, so use them for planning, not a final bid.
They are screening ratings from federal soil and geology data, not a local estimator's review and not a geotechnical report. Tested against 511 reviewed counties, they land within one level most of the time, and exact matches are less common. Get borings before you price a real site.
Soil Report
A $350 DirtBid AI Soil Report reads the official USDA survey for your exact parcel, flags the hazards above, and prices the risk — before you buy land or sign a contract.