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Interstate 129 (I-129) is an auxiliary Interstate Highway which connects South Sioux City, Nebraska, to I-29 in Sioux City, Iowa. Opened in 1976, I-129 is a 3.5-mile-long (5.6 km) route, running 3.21 miles (5.17 km) in Nebraska. At 0.286 miles (0.460 km), I-129 is the shortest highway in the state of Iowa.
Longer bridges can reduce the width of both shoulders to 4 feet (1.2 m). Existing bridges can remain part of the Interstate system if they have at least 12-foot-wide (3.7 m) lanes with 3.5-foot (1.1 m) shoulder on the left and a 10-foot (3.0 m) shoulder on the right, except that longer bridges can have 3.5 feet (1.1 m) shoulders on both sides.
The proposed highway was to run from Illinois Route 80 near Port Byron, Illinois, which ran along the eastern bank of the Mississippi River, over a new bridge into Iowa. It would then span 298 miles (480 km) across the state to the South Omaha Bridge where US 275 crossed the Missouri River. [50] The entire route was to be near US 6 across the ...
The Davenport Skybridge is a pedestrian cable-stayed bridge [5] that spans River Drive in downtown Davenport, Iowa. It connects LeClaire Park to a courtyard and parking ramp on 2nd Street, located near the River Music Experience. The bridge, completed in 2005, is 50 feet (15 m) tall, 575 feet (175 m) long, and features 99 feet (30 m) columns.
Topography of Iowa, with counties and major streams Landforms of Iowa, based on Prior (1991) and Calvin (1904), with major rivers and streams. Despite popular perception, Iowa is generally not flat; most of the state consists of rolling hills. Prior [19] divides Iowa into eight landforms based on glaciation, soils, topography, and river drainage:
Hawkeye Point is the highest natural point in Iowa at 1,670 feet (510 m). [1] It is approximately 4.5 miles (7.2 km) north of Sibley on the eastern side of SR 60 and approximately 3.5 miles (5.6 km) south of the Iowa-Minnesota state border. The high ground lies 100 feet (30 m) due south of an old silo.
Positioned some 25 miles (40 km) (30 minutes) from the Quad Cities, 38 miles (61 km) (52 minutes) from Iowa City and some 68 miles (109 km) (75 minutes) from Cedar Rapids, Muscatine is the smallest link in a non-contiguous populated area which surpassed 800,000 residents in the decade following the 2000 census. The key feature of this region is ...