As Needed Bridge Load Rating Services - Standard Structures
This scope of service is to perform structural analysis on bridges on an as needed basis in
conformance with National Bridge Inspection Standards (NBIS) and MDOT policies and
procedures. Steel, reinforced concrete, and prestressed concrete bridges will be included.
Arches and trusses will be excluded.
The Load Rating analysis consists of bridges and culverts, including calculating the Federal
Inventory, Federal Operating, and Michigan Operating Load Ratings, Load Posting requirements
and Overload Class. Should the initial rating determine that load posting or Overload Class
reduction is necessary, more detailed analyses may be required. Services will be required as
directed by the MDOT Project Engineer Manager; durations of time will be established at the
time of request.
Full time services will not be required on all projects at all times. This scope is for “as needed”
services, based on the intermittent needs of MDOT and is set up for approximately 400 structures
(1600 Spans). It must be noted that this is not a guarantee that MDOT will use the Consultant’s
services. Every attempt will be made to submit requests and schedule at least one week prior to
the need for personnel, however it is expected that any requests made will be complied with
within a 48 hour period. If the consultant is unable to fulfill the request, MDOT may utilize a
secondary Consultant for the services.
