• Transportation Resources

Adaptive Transportation Projects and Design Guidelines

These resources provide examples of physical adaptation projects in the transportation sector as well as other examples related to project design, such as design guidelines that incorporate climate change projections. Many of the examples in this list are provided by case studies developed through a cooperative agreement with the Federal Highway Administration. Apply additional filters to narrow the list by region, state, climate impacts, jurisdictional focus, or transportation lifecycle stage.

 

 

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Confusion Hill Bypass in Mendocino County, California

2009

The California Department of Transportation (Caltrans) completed the Confusion Hill Bypass project to reduce the vulnerability of Highway 101 in Northern California to landslides. Between 1996 and 2003, Caltrans spent a total of $14 million repairing and maintaining a 2-mile stretch of the highway. In the winter of 2002/2003, Highway 101 was closed 10 times due to landslides. Caltrans identified landslides and flooding as constant challenges in Caltrans District 1, which includes Confusion Hill in Mendocino County.

Resource Category: Solutions

 

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Elevated Ventilation Grates for New York City’s Subway System

2009

New York City’s Metropolitan Transit Authority (MTA) installed raised ventilation grates at 25 different locations throughout the city in order to reduce flooding of their subway system. Similar strategies could be used for underground highway assets, such as tunnels, where ventilation systems are at risk of flooding.

Resource Category: Solutions

 

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Florida “Sacrificial” Roads Projects

2007

Recognizing the increasing maintenance and replacement costs for coastal roads in Florida due to more frequent flooding and storm surge, the Federal Highway Administration (FHWA) – Eastern Federal Lands Highway Division (EFL), assisted the National Park Service and other partners designing specific roads that are prone to be frequently washed out to have minimal environmental impact. Rising sea levels and coastal storms, which are projected to increase in intensity as a result of climate change, are creating more challenges for building and maintaining transportation infrastructure along coastal shorelines.

Resource Category: Solutions

 

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Spencer Creek Bridge Replacement and Highway 101 Realignment

May 9, 2006

While replacing the Spencer Creek Bridge, the Oregon Department of Transportation (ODOT) also realigned vulnerable sections of Highway 101 approaching the bridge, shifting the highway 50 feet inland in order to avoid expected sea cliff erosion impacts over the intended design life of the bridge and highway.

Resource Category: Solutions

 

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Pringle Creek (Salem, Oregon) Green Streets Initiative

2006

In 2006, the community of Pringle Creek, Oregon installed porous pavements on 100 percent of its streets, called its “Green Streets” iniative. The project combined a variety of green infrastructure techniques such as rain gardens and bioswales, with porous pavements to mitigate flooding of Pringle Creek streets during heavy precipitation events. The green infrastructure techniques used by the community are designed to return 90 percent of rainwater to the local aquifer, as opposed to flowing as runoff to community storm sewers.

Resource Category: Solutions

 

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Oregon Guidance on Biofilters for Storm Water Discharge Pollution Removal

January 2003

In 2003, the Oregon Department of Environmental Quality (DEQ) published guidance on the use of “biofilters” to remove pollution from stormwater. Biofilters include a variety of green infrastructure techniques installed along roadways to filter pollution from stormwater runoff such as constructed wetlands and bioswales (vegetated swales or ditches), among others. The guidance details the design best management practices (BMPs) that have been proven to work well in constructing biofilters, and argues that biofilters may be the “most economical” way to remove sediment and other pollutants from runoff.

Resource Category: Solutions

 

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