(A) Residential construction. Residential driveway approaches shall be constructed of six-inch-thick, 3,500-p.s.i-compressive-strength concrete, reinforced with #3 steel bars on 18-inch centers each way, with #4 bars doweled into the existing concrete paving. Residential driveways shall be constructed with the return curbs having a rolled face disappearing at the sidewalk and joining the street curb.
(B) Commercial and industrial construction. Commercial and industrial driveway approaches shall be constructed of six-inch-thick, 3,500-p.s.i-compressive-strength concrete, reinforced with #4 steel bars on 18-inch centers each way, with #4 bars doweled into the existing concrete paving. Commercial and industrial driveways shall be constructed with the return curbs having a rolled face disappearing at the sidewalk and joining the street curb.
(C) Driveway approach depth. The driveway shall begin at the street curb and extend to the property line. The drive approach shall be constructed such that the height of the drive approach at the property ROW shall be two and one-half inches higher than the top of the curb.
(D) Driveway approach widths and spacing. The criteria contained in the following table shall be the minimum and/or maximum standards to be applied in spacing and designing driveways on public streets. For the purpose of this regulation, driveway width shall be measured at the property line. The Director of Public Works may modify these standards, based on anticipated traffic flow and in accordance with sound traffic engineering practices. To implement the standards contained in the following table, subdivision plats for new commercial developments shall be required to provide mutual access easement in accordance with § 154.045.
DRIVEWAY SPACING AND DESIGN CRITERIA
| |||||
Description | Street Classification | Residential Driveway | Commercial Driveway | ||
Min. | Max. | Min. | Max. | ||
DRIVEWAY SPACING AND DESIGN CRITERIA
| |||||
Description | Street Classification | Residential Driveway | Commercial Driveway | ||
Min. | Max. | Min. | Max. | ||
Driveway Throat Width | Local | 12' | 25' | 25' | 35' |
Minor Collector | 12' | 25' | 25' | 35' | |
Major Collector | 16 | 25' | 25' | 35' | |
Arterial | 20' | 25' | 25' | 35' | |
Driveway Curb Radius | Local | 5' | 10' | 10' | 20' |
Minor Collector | 5' | 10' | 10' | 20' | |
Major Collector | 10' | 10' | 10' | 20 | |
Arterial | 15' | 15' | 20' | 30' | |
Driveway Spacing (centerline) | Local | 22' | n/a | 100' | n/a |
Minor Collector | 32' | n/a | 100' | n/a | |
Major Collector | n/a* | n/a | 150' | n/a | |
Arterial | n/a* | n/a | 250' | n/a | |
Minimum Distance from Driveway to Intersection (pi to pi) | Local | 30' | n/a | 75' | n/a |
Minor Collector | 50' | n/a | 100' | n/a | |
Major Collector | 100' | n/a | 150' | n/a | |
Arterial | 100' | n/a | 180' | n/a | |
*Direct access to major collector and arterial streets from a residential dwelling established after the effective date of this code is prohibited, unless specifically approved by the Public Works Director. An applicant may appeal a decision of the Public Works Director to the City Council. | |||||
(E) Provision for joint approaches. Driveway approaches shall be located entirely within the frontage of the premises they serve, except that joint or cooperative driveways with adjoining property holders may be permitted by the Director of Public Works. When a joint-drive approach is proposed by a developer, the request must be made by all interested parties and/or all property owners involved.
(F) Angle of driveway approach. The angle of the driveway approach with the curb line shall be 90 degrees.
(G) Sidewalk to be removed. Where a driveway approach is to be built, any existing sidewalk located within the proposed driveway location shall be removed and the entire area replaced as a driveway. The drive approach shall extend to the property line.
(H) Driveways crossing bar ditches.
(1) Culvert size. The minimum culvert pipe size shall be 18-inch diameter. However, an engineered design that provides for a larger culvert pipe size may be required by the developer, where the Director of Public Works determines that additional drainage capacity may be required. Commercial driveways shall have concrete safety ends installed on each end of the culvert.
(2) Radius. Driveways shall be constructed with the return curbs joining the edge of pavement at the street with a minimum-ten-foot radius.
(3) Slope. The maximum slope from the edge of driveway to the top of the culvert pipe shall be 6:1. The sloped area around the end of the culvert pipe shall be sodded or hydro-mulched to resist erosion.
(4) Cross slope. The minimum cross slope of the culvert shall be one-eighth-inch per foot.
(5) Maintenance. Future maintenance of the drive approach and culvert pipe is the responsibility of the property owner.
(6) Grading. During the drive-approach installation, all ditch grading upstream and downstream of the proposed driveway culvert is the responsibility of the property owner.
(I) General.
(1) Driveway approaches at pedestrian crossings. Driveway approaches shall not be located in street intersections or at established pedestrian crossings.
(2) Driveway approaches at obstructions. Driveways shall be kept at a minimum of five feet away from obstructions such as street light posts, fire hydrants, traffic signals and the like.
(3) Accumulative width of approaches. Driveway approaches shall not occupy more than 40% of the frontage of a lot or tract.
('68 Code, App. B, § 5.09) (Ord. 8-1989-34, passed 8-8-89; Am. Ord. 06-1993-21, passed 6-24-93; Am. Ord. 12-2021-67, passed 12-14-2021)