Skip to main content

Possible online services disruption due to Internet related outage

A worldwide technology outage is causing disruption to some State of Illinois online systems.  We are aware of this issue and are diligently working on restoration.

Agency Alert

Welcome to the new IDOT home page.  Our location has changed, please update any bookmarks.

Type Size and Location Drawings (TSL)

TSL's are drawings that depict the general type and size of a bridge, its location and the proposed work to be done. TSL drawings are done by IDOT's Bureau of Bridges and Structures Planning Unit or by the consultant. IDOT consultants, contractors, fabricators and suppliers may benefit from being able to preview the type of bridges and materials to be used on future projects. Final bridge types, material and details are subject to refinement during the design phase.
The following TSL drawings are in Adobe PDF format. These drawings are for bridge projects on the state highway system that have been approved for design. This list will be updated every three months and projects will be removed from the list after they have been awarded.

(Last Update: February, 2024)

Structure Number County Superstructure Type Substructure Type Date

Structure Number County Superstructure Type Substructure Type Date

Footer