Number of Bridges by State
12 states have more highway bridges to maintain then New York State.
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12 states have more highway bridges to maintain then New York State.
If the state fiscal crisis and oil crisis of 1973 hasn't hit many more highways might have been built. Key to map here: http://www.averillpark.net/Highways/1973Overview.html
More about Hartford's Ghost Ramps.
50 percent of Albany County's currently in-use bridges were built before 1971.
Living near a superhighway can be convenient, but it's also can be unhealthy. Noise pollution and air emissions can lead to a shorter lifespan. The greatest impacts of highway pollution are felt by people who live, work, or recreate within 1,000 feet of a limited-access road.
Data Source:Β Open Street Map, Motorway and Motorway_Links, with a 1,000 feet buffer.
This map shows the average of bridge ratings for most towns in New York State. Some of the towns are lacking data or did not match when I completed the data join yesterday.
In New York State, bridge inspectors assess all of a bridgeβs individual parts. They are required to evaluate, assign a condition score, and document the condition of up to 47 structural elements, including rating 25 components of each span of a bridge, in addition to general components common to all bridges. The NYSDOT condition rating scale ranges from 1 to 7, with 7 being in new condition and a rating of 5 or greater considered as good condition.
NYSDOT also computes an overall New York State condition rating for each bridge by combining the ratings of individual components using a weighted average formula. This formula assigns greater weights to the ratings of the bridge elements having the greatest structural importance and lesser weights for minor structural and non-structural elements. If a bridge has multiple spans, each element common to the spans is rated and the lowest individual span element rating is used in the condition rating formula.
NYSDOT defines a deficient bridge as one with a State condition rating less than 5.0. A deficient condition rating indicates deterioration at a level that requires corrective maintenance or rehabilitation to restore the bridge to its fully functional, non-deficient condition. It does not mean that the bridge is unsafe.