23 C.F.R. § 490.407 – National performance management measures for assessing bridge condition.

(a) There are three classifications for the purpose of assessing bridge condition. They are:
1. (1) Percentage of NHS bridges classified as in Good condition;
2. (2) Percentage of NHS bridges classified as in Fair condition; and
3. (3) Percentage of NHS bridges classified as in Poor condition.
(b) [Reserved]
(c) To carry out the NHPP, two of the three classifications are performance measures for State DOTs to use to assess bridge condition on the NHS. They are:
1. (1) Percentage of NHS bridges classified as in Good condition; and
2. (2) Percentage of NHS bridges classified as in Poor condition.
(d) Determination of Good and Poor conditions are described in § 490.409.