Parking Structure Construction in Wyoming

Parking deck and podium garage construction in Wyoming: snow load, drainage, salt and freeze-thaw, precast versus cast-in-place, and where a structure pays.

Sixty pounds per square foot of snow sits on the top deck of a parking structure in an Evanston basin area, where the design load sheet sets a 40 psf minimum and 60 psf in basin zones. That is the first number we check on this building type, because an open roof deck has no insulation, no attic and no way to shed load except the slope and the plow. In a state where most parking is a surface lot, a structure only makes sense when land is the limit.

Land is the limit in a few specific places. In Jackson, less than 3 percent of Teton County is privately owned and the airport inside Grand Teton National Park handled 1,161,320 passengers in 2025, with the park capping its terminal height at 18 feet. In Laramie, the University of Wyoming enrolled about 8,200 students for in-person instruction in fall 2024 on a city that sits near 7,165 feet. Hospital campuses, such as the one in Casper, face the same pressure when a wing takes over a lot.

We build open-air decks and podium garages, and we think of them as precision concrete work on a site with a heavy winter. A deck beneath a hospital wing is a different design question from a stand-alone campus garage, and we sort out which one you are building before we price it.

Decks, ramps and the stair cores

A parking structure is a stack of slabs on columns with ramps and stair and elevator cores. Systems are cast-in-place post-tensioned concrete, precast concrete or a hybrid. Cast-in-place gives more flexibility on odd sites. Precast is fast to erect and works well when the crane has room. We choose with the owner after looking at the site, the crane access and the winter.

Ramp geometry and sight lines determine how the structure feels to use. A steep, narrow ramp in January is a complaint waiting to happen. Slopes, turning radii, column spacing and stall widths are laid out against the design vehicle, and the lighting is detailed so snow and shadow do not hide curbs. Stair cores need to be enclosed and heated or at least wind-sheltered where occupants will use them daily.

Open garage classification and local criteria

The building code treats an open parking garage differently from an enclosed one, with allowances for height and area, provided the sides meet open-area requirements. Wyoming adopted the 2024 International Codes on June 28, 2024, but has no single statewide building code, so each city and county applies its own edition and amendments.

Design criteria vary widely. Evanston requires footings 54 inches below grade and 100 to 110 mph wind depending on exposure, Teton County lists a 105 mph wind speed and a 34 inch frost line, and Wright publishes 30 psf ground snow and 90 mph wind. A structure that is open to the weather catches wind from every direction, and the lateral system has to handle it. We confirm the criteria with the local department before design.

Where a structure earns its place

In Jackson, with snowfall averaging 78.2 inches a year and land at a premium, structured parking is a way to meet parking requirements on a small lot, often under housing or retail. Airport parking competes with the strict height limits and the park setting, which tells you how carefully height is controlled in that county.

Laramie has about 48 inches of snow and 11 inches of precipitation a year at 7,165 feet, and a university that needs spaces near the core of campus. A campus garage has to hold a snow load through a long winter and handle the contrast between daily freeze and thaw. Hospital parking in Casper faces a similar squeeze whenever a wing takes over part of a lot.

Concrete is our trade

Parking structures depend on concrete quality. Air-entrained mixes, good consolidation, proper curing and sealing protect the deck from freeze-thaw cycles and de-icing salts that drip off cars. We place and finish our own concrete, which keeps control of the slump, the finish and the timing.

Slopes to drains are built into the deck at every bay, and joints are detailed and sealed. Our industrial concrete floors practice applies to the lower levels, where traffic is heaviest, and our tilt-wall warehouse methods apply to precast or cast-in-place exterior panels that screen the structure.

Plows, drains and salt

The top deck needs a snow plan: where plowed snow goes, whether it is hauled off or stored on a corner of the deck, and what it adds to the design load. Drains are sized for melt events, since a warm day after a heavy snow sends a lot of water into a few drains. We place drains with generous capacity and slope the decks so water leaves quickly.

Lighting, security and wayfinding are part of the build. Cameras, call stations and clear signs make a garage easier to use, and ground-floor retail or a lobby can support activity. An e-commerce fulfillment campus with shift changes has similar needs for employee parking, with bursts of arrivals and departures at predictable hours.

What a deck costs and why

Cost per stall is the usual yardstick, and it rises with the number of levels, the structural system and the site. Site constraints and wind-exposed conditions push the number up. Elevators and stair cores add cost. Below-grade levels add excavation and waterproofing, which is a large addition in a high water table.

Operating cost is part of the budget. Snow removal, drainage maintenance, deck sealing and lighting need annual budgets. We design for ease of maintenance: flat, simple surfaces, good access to drains and durable finishes. For owners who want to compare a structure with a surface lot, we price both with snow storage and maintenance.

Where we take on structures

Our parking work centers on campuses and mixed-use sites in Wyoming's larger towns and on the interstate corridors. We evaluate each site for crane access, utility conflicts and the climate. Campus garages and hotel-attached decks are the most common requests.

Smaller towns rarely need a structure, and we will say so. A well-drained surface lot with a plow route is cheaper and easier to maintain. When the numbers do favor a deck, we bring a clear scope and a realistic winter plan.

Send the site and the stall count

Tell us the parcel, the number of stalls and what sits on top or beside it. We will return a structural option, a snow plan and a budget range per stall.

Plan Your Parking Structure Construction Project

Send the town, the site, the building size, the clear height, the dock count and the schedule. We will review the scope against the local snow, wind and frost values and follow up with next steps.