Federal Highway Administration Finding of No Significant Impact for the Council Bluffs Interstate System Improvements Project, Tier 2, Segment 3, Pottawattamie County, Iowa IMN-029-2(55)49--13-78


Book Description

FHWA and the Iowa Department of Transportation (Iowa DOT) are proposing geometric and capacity improvements to the Interstate 29 (I-29) and Interstate 80 (I-80) mainline in Segment 3 and the I-80 / I-29 East System interchange, the South Expressway interchange, the U.S. Highway 275 (U.S. 275) interchange, and the Madison Avenue interchange to safely and efficiently accommodate future traffic needs. In support of the Segment 3 Project and overall efficiency of transportation in the City of Council Bluffs, the Iowa DOT is also proposing to eliminate several railroad alignments and to develop new, consolidated tracks in Segment 3.







Federal Highway Administration Finding of No Significant Impact and Section 4(f) de Minimis Impact Finding for Tier 2, Segment 1 Council Bluffs Interstate System Improvements Project Pottawattamie County, Iowa and Douglas County, Nebraska Project Number: IM-080-1(318)0 -- 13-78


Book Description

The purpose of this project is to address some of the existing and future transportation needs of the region by upgrading mobility through Interstate 80 (I-80) corridor, improving the condition of the roadway, reducing traffic congestion and crashes, adding capacity, strengthening system bridges, correcting functional design issues, and accommodating planned development on I-80 from a point just east of the I-80/I-480/U.S. 75 system interchange in Omaha, Nebraska, to a point in Council Bluffs, Iowa just east of the I-80 Missouri River Bridge.




Council Bluffs Interstate System Improvements Project Tier 2, Segment 3, Pottawattamie County, Iowa


Book Description

FHWA and Iowa DOT are proposing geometric and capacity improvements to the I-29 and I-80 mainline in Segment 3 and the I-80/I-29 East System interchange, the South Expressway interchange, the U.S. 275 interchange, and the Madison Avenue interchange to safely and efficiently accommodate future traffic needs. In support of the Segment 3 Project and overall efficiency of transportation in the City of Council Bluffs, FHWA and Iowa DOT are also proposing to eliminate several railroad alignments and to develop new, consolidated tracks in Segment 3. STB authorization is required prior to project implementation.




Federal Highway Administration Finding of No Significant Impacts and Programmatic Section 4(f) Evaluation for Broadway Viaduct Improvements Council Bluffs, Iowa, Pottawattamie County, Iowa DOT Project Number: NHSX-6-1(109)-3H-78


Book Description

The purpose of this project is to maintain a safe and efficient flow of traffic over the Broadway Viaduct by providing a facility that meets Iowa DOT's current design standards for a principal arterial highway. The Broadway Viaduct is part of U.S. 6 connecting Council Bluffs, Iowa, and Omaha, Nebraska, and needs to be replaced to maintain the connectivity between the two cities. The project is located within the City of Council Bluffs in Pottawattamie County, Iowa. This Environmental Assessment evaluates alternatives for improvements to the existing viaduct and replacing the viaduct, with viaduct replacement identified as the preferred alternative.




Broadway Viaduct Improvement Study, City of Council Bluffs, Pottawattamie County, Iowa


Book Description

The purpose of this Project is to maintain a safe and efficient flow of traffic over the Broadway Viaduct by providing a facility that meets Iowa DOT's current design standards for a principal arterial highway. The Broadway Viaduct is part of U.S. 6 connecting Council Bluffs, Iowa, and Omaha, Nebraska, and needs to be replaced to maintain the connectivity between the two cities. The Project is located within the City of Council Bluffs in Pottawattamie County, Iowa. This Environmental Assessment evaluates alternatives for improvements for to the existing viaduct and replacing the viaduct, with viaduct replacement identified as the preferred alternative.




Federal Highway Administration Finding of No Significant Impact and Section 4(f) de Minimis Impact Finding for U.S. 20 Widening Project Woodbury, Ida, and Sac Counties, Iowa


Book Description

The Iowa Department of Transportation (Iowa DOT) and the Federal Highway Administration (FHWA) are proposing to improve 44 miles of U.S. Highway 20 (U.S. 20) in Woodbury, Ida, and Sac Counties, Iowa. The project study area is located in a rural part of western Iowa. The proposed project begins 3.5 miles east of Iowa 140 (IA 140) near Moville and extends east to the north junction of U.S. 20 and U.S. 71 near Early. The study area extends 500 feet north and south of U.S. 20 for a total width of 1,000 feet.




West 1 St Street/ IA 57 from Highland Drive to Center Street/Franklin Street, Black Hawk County, Iowa, Project # STP-57-2(28)--2C-07


Book Description

From Proposed Action: "Iowa Northland Regional Council of Governments (INRCOG) and the City of Cedar Falls, in coordination with the Iowa Department of Transportation (Iowa DOT) and the Federal Highway Administration (FHWA), are proposing to upgrade and modernize an approximate 4,900-foot segment of Iowa Highway 57 (IA 57), locally known as West 1st Street, in Cedar Falls, Black Hawk County, Iowa."




IA 86 from IA 9 to 700 Feet South of 110th Street, Dickinson County, Iowa STP-086-1(10)-2C-30 Environmental Assessment and Section 4(f) de Minimis Impact Finding


Book Description

The Iowa Department of Transportation (Iowa DOT) and the Federal Highway Administration (FHWA) are evaluating potential alternatives to maintain, improve, or replace a 3.9-mile segment of IA 86 from Iowa Highway 9 (IA 9) to near the Minnesota border within Dickinson County, Iowa (the Project). Iowa DOT proposes to improve IA 86 by constructing two 14-foot-wide driving lanes, and 8-foot-wide shoulders (4 feet paved and 4 feet granular). Foreslopes are a graded part of the roadway cross section that extend outside of the shoulders to ensure the stability of the roadway and to provide a reasonable opportunity for recovery of an out-of-control vehicle. Foreslopes having a grade of 6 feet horizontal for each foot of vertical decrease (a 6:1 ratio) would be constructed from the shoulder, and a 3:1 ratio from the edge of the 6:1 slope to drainage ditches. However, 4:1 foreslopes from the shoulder to the ditches would be constructed in areas where both sides of IA 86 are bordered by designated natural lands.