2019 Design Standards Amendments

Chapter 5 Roadway Design 5A-1 C. Add the following subsection C. Permits State and federal permits may be required, depending on the circumstances. It shall be the responsibility of the Project Engineer to acquire all applicable permits. A copy of the permits shall be provided to the City prior to construction. 5B-1 F. Add the following section: F. Industrial Streets Industrial streets are intended to carry industrial traffic and service as a means of access to abutting industrial property. 5B-1 G. Add the following section: G. Cul-de-sacs Cul-de-sacs are placed at the end of streets to provide turn-around capabilities. 5B-1. H Add the following paragraphs a 5B-.H: 5B-1.H Alleys 1. Approvals and Permits, A. Plans and specifications for public alley improvements must be reviewed and approved by the City Engineer prior to construction. B. Local, state and federal permits may be required, depending on the circumstances. It shall be the responsibility of the Project Engineer to acquire all applicable permits. A copy of all permits shall be provided to the City prior to construction. 2. Alley Classification A. A Residential Alley is a route located between local streets used primarily for access to the rear of residential property. B. A Commercial Alley is a route located in commercial areas used primarily for access to the rear of commercial property. 3. Right-Of-Way Width The right-of-way width shall be 20 feet for all alleys. 4. Pavement Width A. Residential alleys shall have a minimum pavement width of 16 feet. B. Commercial alleys shall have a minimum pavement width of 20 feet. 5. Alley Grades The maximum grade for alleys shall be 8% for residential and 5% for commercial alleys. The minimum grade shall be 0.5% for all types of alleys. 6. Alley Pavement Cross Section The pavement shall have a 4% inverted crown cross-section, or as approved by the City Engineer. 7. Pavement Material and Thickness A. The pavement slab may be constructed of the following materials: 1. Non-reinforced Portland cement concrete conforming the IDOT specifications C-3 mix or M-3 mix as applicable. 2. Full depth asphaltic concrete hot mix conforming to the IDOT specifications for Type “B” base and Type “A” surface course. 9