National bridge rating

The national bridge rating was a database that was belong to NADOT. It brings information to the bridges that have small or large cracks. Each bridge has its own design shows its information and inspection. The data is often used to analyze bridges and judge their conditions. It uses bridge inspection, bridge types, and the bridge design.

Description
Identification information addresses the bridge's location uniquely and classifies the type of the routes carried out on and/or under the structure and locates the bridge within the spatial location. Each bridge is given a number by the highway department of the respective state or the agency that maintains the bridge. The method of assigning numbers differs from one state to another, but provides a unique number for each bridge in the state.

Rating scale
The national bridge rating includes an elevation of deck and superstructure on a 10-1 scale. The term "deficent" is used on bridge with a scale of 3 or lower. The term "sound" is used on a bridge with a scale of 6 or lower.
 * 10: Excellect condition, no problems noted.
 * 9: Great condition, little bit of problems.
 * 8: Good condition, some of the problems.
 * 7: Satisfactory condition, shows some minor deteriation.
 * 6: Fair condition, all elements are a bit sound because of little cracks, and minor deteriotion
 * 5: Poor condition, elements are a little sound because of section loss and moderate deteriation.
 * 4: Serious condition, elements are structurally sound because of moderate deteriation and loss of section, spreading to the components of the bridge.
 * 3: Critical condition, elements are structurally deficient because of major deteriation, major cracks are possible.
 * 2: Bad condition, elements show some major deteriotion, its oldest age, and super major cracks are possible. The bridge is closed when it was replaced by a new bridge or to be rehabilitated.
 * 1: Out of service, bridge was closed when it was replaced by a new bridge.

Some bridges are listed deficient, and the others is listed sound in New Stockholm.

For example, the Edinburgh Viaduct in Edinburgh, New Astoria, listed as a 4 and it is in serious condition and its deteriation is moderate. The Manhattan Viaduct in Manhattan, New Astoria, listed as a 5 in 1981 when Highway 170 was built. Then in 1999, it was listed as a 3 and it is in critical condition and its age.