U.S. 20 West - Dubuque to Manchester

U.S. 20 quickly expands to four lanes leading into the intersection with Locust Street (unsigned Iowa 946). Iowa 946 connects the Julien Dubuque Bridge west end with Downtown Dubuque, U.S. 61/151 north to Dickeyville, Wisconsin, and U.S. 61-151 south to Dubuque Regional Airport (DBQ), the Quad Cities and Cedar Rapids.

05/30/11

A sign bridge supports all traffic lights between U.S. 20 (Dodge Street) and Iowa 946 (Locust Street). Locust Street is the pre-freeway alignment of U.S. 52-61-151 northward into the Downtown District.

05/30/11

Dubuque County is one of 37 counties in northeastern Iowa included in the Silos and Smokestacks National Heritage Area. The National Park Service heritage area focuses number of sites, programs and events celebrating the history of agriculture in America.

12/21/09

U.S. 20 immediately upgrades to a freeway on the climb from the Mississippi River area toward the West End District. A split diamond interchange follows in a half mile with Grandview and Fremont Avenues. The Bryant and Hill Street off-ramp precedes that exit however.

12/21/09

Right-in right-out (RIRO) ramps joins U.S. 20 (Dodge Street) with Bryant Street south to Grandview Avenue and Hill Street north to Mercy Hospital and 9th Street outside downtown.

12/21/09

Traffic bound for the College Grandview District departs U.S. 20 west for Grandview and Fremont Avenues. Grandview Avenue leads north to Finley Hospital and Clarke University while Fremont Avenue stems south from Lombard Street and U.S. 20 to a residential area by the Middle Fork of Catfish Creek.

12/21/09

U.S. 20 stays below grade and passes under both Grandview and Fremont Avenues ahead of the freeway end.

12/21/09

An at-grade intersection provides access to adjacent St. Joseph Street as U.S. 20 transitions into a commercial arterial.

12/21/09

Devon Drive south meets U.S. 20 at the first of several signalized intersections with shopping centers.

12/21/09

U.S. 20 shifts northward from the exchange with Iowa 136 across the North Fork of the Maquoketa River.

05/08/10

Turning west toward Earlville, the ensuing stretch of U.S. 20 in Dyersville was upgraded to limited access standards with the intersection at 7th Street SW eliminated.

05/08/10

Crossing into Delaware County, U.S. 20 advances to a diamond interchange (Exit 292) with CR X49 (330th Avenue). The exchange opened to traffic on November 11, 2016.¹

05/08/10

County Road X49 (330th Avenue) leads north from Exit 292 on U.S. 20 through western Dyersville, eventually meeting Iowa 3 in Colony township.

05/08/10

Construction from April to November 2016¹ at the grade separation with CR X49 included eliminating the succeeding intersection along U.S. 20 westbound at 320th Avenue.

05/08/10

U.S. 20 transitions back into an at-grade expressway west of 320th Avenue.

05/08/10

The southern branch of County Road X47 follows 310th Avenue between U.S. 20 and Iowa 38 near San Springs.

05/08/10

U.S. 20 continues west along the Bremen and North Fork township line.

05/08/10

The northern branch of CR X47 lines 300th Avenue from U.S. 20 to Petersburg and Iowa 3 near Colesburg.

05/08/10

U.S. 20 advances west from CR X47 across Silver Creek.

05/08/10

Passing between Plum Creek and Indian Hills Wildlife Area, one mile ahead of the parclo interchange (Exit 285) with CR X35 (270th Avenue) north into Earlville.

05/08/10

CR X35 follows West Street and Northern Avenue through the Earlville business district. Beyond the city, CR X35 resumes along 270th Avenue north to CR C64 in Elk Colony township.

05/08/10

The exchange with CR X35 (270th Avenue) along U.S. 20 was built in 1987.

05/08/10

An implied overlap with U.S. 20 west leads CR X35 south along 260th Avenue to Iowa 38 in Delhi township.

05/08/10

The city of Delaware lies three miles west of CR X35 along U.S. 20. Waterloo is 55 miles away via U.S. 20 and Interstate 380 north.

05/08/10

Iowa 38 crosses paths with U.S. 20 in one mile at a parclo interchange (Exit 282).

05/08/10

245th Avenue intersects U.S. 20 just ahead of the Delaware city limits south from CR D22 (210th Street).

05/08/10

South from U.S. 20 at Delaware, Iowa 38 travels three miles to the city of Delhi and 11 miles to the city of Hopkinton.

05/08/10

Exit 282 departs U.S. 20 west for Iowa 38 (5th Street) north into Delaware. A 99 mile long route, Iowa 38 extends north to Greeley and Iowa 3 and south to Monticello at U.S. 151 and Muscatine along the Mississippi River.

05/08/10

U.S. 20 travels west from Delaware to Waterloo is a full freeway. The Delaware County seat of Manchester lies five miles ahead along the corridor.

05/08/10

Exit 277 with CR D5X (Jefferson Road) represents the first of two access points from U.S. 20 into the city of Manchester.

05/08/10

A folded diamond interchange (Exit 277) joins U.S. 20 with Bailey Drive north into Manchester and Jefferson Road (CR D5X) east to Delhi.

05/08/10

Spanning the Maquoketa River, U.S. 20 runs through southern reaches of the Manchester city limits by Schram Park.

05/08/10

A diamond interchange (Exit 275) connects U.S. 20 with Iowa 13, 0.75 miles west of the CN Railroad underpass.

05/08/10

Manchester Industrial Park lies just north of U.S. 20 and east of Iowa 13. Ryan, a small rural city, is 7.5 miles to the south along the state highway.

05/08/10

Exit 275 leaves U.S. 20 west for Iowa 13 north to Main Street (old U.S. 20) east into Downtown Manchester and south to Central City, Marion and Cedar Rapids.

05/08/10

A 7.9 mile long exit less stretch commences west from the Iowa 13 entrance ramp to Exit 266 in Middlefield township.

05/08/10

Distance sign posted 44 miles east of Waterloo. Lamont references the succeeding exit with Iowa 187 north.

05/08/10

Westward toward the city of Masonville, U.S. 20 crosses open areas of farmland south of 220th Street (CR D22 / old U.S. 20).

05/08/10

Crossing into Buchanan County along U.S. 20 westbound south of Masonville.

05/08/10