[Code of Federal Regulations]
[Title 23, Volume 1]
[Revised as of April 1, 2002]
From the U.S. Government Printing Office via GPO Access
[CITE: 23CFR650.707]

[Page 236]
 
                           TITLE 23--HIGHWAYS
 
 CHAPTER I--FEDERAL HIGHWAY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION
 
PART 650--BRIDGES, STRUCTURES, AND HYDRAULICS--Table of Contents
 
         Subpart G--Discretionary Bridge Candidate Rating Factor
 
Sec. 650.707  Rating factor.

    (a) The following formula is to be used in the selection process for 
ranking discretionary bridge candidates:
[GRAPHIC] [TIFF OMITTED] TC14OC91.010


The lower the rating factor, the higher the priority for selection and 
funding.
    (b) The terms in the rating factor are defined as follows:

SR is Sufficiency Rating computed as illustrated in appendix A of the 
Recording and Coding Guide for the Structure inventory and Appraisal of 
the Nation's Bridges, USDOT/FHWA (latest edition); (If SR is less than 
1.0, use SR=1.0);
ADT is Average Daily Traffic in thousands taking the most current value 
from the national bridge inventory data;
ADTT is Average Daily Truck Traffic in thousands (Pick up trucks and 
light delivery trucks not included);
For load posted bridges, the ADTT furnished should be that which would 
use the bridge if traffic were not restricted.
The ADTT should be the annual average volume, not peak or seasonal.

D is Defense Highway System Status
D=1 if not on defense highway
D=1.5 if bridge carries a designated defense highway

    The last term of the rating factor expression includes the State's 
unobligated balance of funds received under 23 U.S.C. 144 as of June 30 
preceding the date of calculation, and the total funds received under 23 
U.S.C. 144 for the last four fiscal years ending with the most recent 
fiscal year of the FHWA's annual call for discretionary bridge candidate 
submittals; (if unobligated HBRRP balance is less than $10 million, use 
zero balance);

TPC is Total Project Cost in millions of dollars;
HBRRP is Highway Bridge Replacement and Rehabilitation Program;
ADT' is ADT plus ADTT.

    (c) In order to balance the relative importance of candidate bridges 
with very low (less than one) sufficiency ratings and very low ADT's 
against candidate bridges with high ADT's, the minimum sufficiency 
rating used will be 1.0. If the computed sufficiency rating for a 
candidate bridge is less than 1.0, use 1.0 in the rating factor formula.
    (d) If the unobligated balance of HBRRP funds for the State is less 
than $10 million, the HBRRP modifier is 1.0. This will limit the effect 
of the modifier on those States with small apportionments or those who 
may be accumulating funds to finance a major bridge.

[48 FR 52296, Nov. 17, 1983; 48 FR 53407, Nov. 28, 1983]