Minnesota earned a “C” grade for overall infrastructure, according to a new report out today from the American Society of Civil Engineers or ASCE. Spokesman Jason Staebell says the “C” grade means “infrastructure is mediocre and requires attention. While our bridges, transit system, ports and more are in fair condition, some elements show general signs of deterioration and require attention.” Aviation received the highest grade of a “B”. Road conditions received a “D+”. The report found that the average driver in the Twin Cities spends 41 peak hours in congestion each year–at an average cost of $1332. Spokeswoman Ariel Christiansen says “much of Minnesota’s infrastructure is aging, and reaching the end of its expected lifespan. The majority of our systems were built in the late 20th century before much of today’s modern technology was developed. New materials and expanded environmental awareness and regulation require upgrades.” The other categories graded were: dams (C), drinking water (C-), energy (C), ports (C+), transit (C-) and wastewater (C). The grading was based on 8 criteria: capacity, condition, funding, future need, operations and maintenance, public safety, resiliency, and innovation. Though average, Minnesota’s grade bested the national cumulative average of a “D+”.