Jefferson Township, Polk County, Iowa

The Herrold Bridge is a historic structure located near the unincorporated community of Herrold, Iowa, United States. It carried a gravel road for 156 feet (48 m) over Beaver Creek. Completed in 1921, this concrete cantilevered deck girder bridge replaced an earlier timber pile structure. It was designed by the Iowa State Highway Commission the previous year, and the Polk County Board of Supervisors awarded the construction contract to Ben Cole of Ames. The total cost of construction was $24,283.36. The bridge features three arched concrete deck girder spans that are cantilevered from concrete abutments and piers. It is considered one of the most technologically significant of Iowa's concrete girder bridges. The bridge was listed on the National Register of Historic Places in 1998. While it remains in place, the Herrold Bridge was replaced by a newer span slightly downstream.

Herrold is an unincorporated community in Polk County, Iowa, United States. Herrold is located in Jefferson Township. The state capital and county seat of Des Moines is slightly over 10 miles to the southeast. Since 1990, the town has been part of nearby Camp Dodge and is not open to the public. The historic Herrold Bridge crosses the Beaver Creek to the west of the community.

Grimes is a city in Dallas and Polk counties in the U.S. state of Iowa. The population was 15,392 at the time of the 2020 Census. Grimes is part of the Des Moines metropolitan area.

Camp Dodge is a military installation in the city of Johnston, Iowa. Centrally located near the capital of Iowa, it currently serves as the headquarters of the Iowa National Guard.

Johnston High School is a public secondary school located in Johnston, Iowa. It is part of the Johnston Community School District. The school serves approximately 1,600 students in grades 10 through 12. Freshman students attend Johnston Middle School.

Granger is a city in Dallas and Polk counties in the U.S. state of Iowa. The population was 1,654 at the time of the 2020 census, up 184% from 583 in 2000. It is part of the Des Moines–West Des Moines Metropolitan Statistical Area.

Big Creek is a stream in the U.S. state of Iowa. It is a tributary to the Des Moines River. Big Creek was so named due to its relatively large size compared to other nearby streams.

The Woodward-Granger Community School District is a rural public school district headquartered in Granger, Iowa.The district spans northeastern Dallas County, with smaller areas in Boone and Polk counties. The district serves Woodward, Granger, and the surrounding rural areas. The district was founded in 1963 as the consolidation of Woodward and Granger schools.

USS Des Moines (CA-134) was the lead ship of the class of United States Navy heavy cruisers. She was the first ship in the United States Navy to feature the auto loading Mark 16 8-inch/55 caliber gun, the first of its type in the world. She was the second ship of the US Navy to be commissioned with the name of the capital of Iowa. Launched 1946, she was commissioned in 1948. She saw duty around the world until her decommissioning in 1961; she was permanently mothballed. A 1981 survey was done to determine if she was worthy of reactivation for the 600-ship Navy, but the cost was too great so she remained in the reserve. She was struck off the naval reserve in 1993, which was followed by a campaign to turn her into a museum ship. The campaign failed, and in 2005 she was sold for scrapping, and she was broken up by July 7. Parts of the ship have been donated to various places for display, including at the USS Salem museum, which is the only Des Moines-class ship to avoid the scrapyard.

The Camp Dodge Pool District, also known as the Camp Dodge Swimming Pool Complex, is a nationally recognized historic district located in Johnston, Iowa, United States. It was listed on the National Register of Historic Places in 1995. At the time of its nomination it consisted of three resources, which included two contributing buildings and one contributing structure. It consisted of a 2,300,000-US-gallon (8,700,000 L) swimming pool, a bathing pavilion, and a concession stand. The complex was built at Camp Dodge, the headquarters of the Iowa National Guard. When it was completed in 1922, the pool could accommodate between 1,000 and 2,000 people and it may have been the largest in the country. The following year, however, a larger pool was built in San Francisco.

KJJY (92.5 MHz) is a commercial FM radio station licensed to West Des Moines and serving Central Iowa. Cumulus Media owns two country music outlets in the Des Moines radio market, KJJY and 97.3 KHKI. KHKI plays mostly current and recent country hits, while KJJY's playlist goes from current releases to the 1980s and 90s. The radio studio and offices are located on 109th Street in Urbandale. KJJY has an effective radiated power (ERP) of 41,000 watts. The transmitter is on NW 100th Street at White Oak Lane in Grimes, Iowa.

KHKI (97.3 MHz) is a commercial FM radio station in Des Moines, Iowa. The station is owned by Cumulus Media and airs a country music radio format known as "97.3 Nash FM." On weekdays, local DJs are heard during the day, while in the evening, KHKI airs two nationally syndicated Nash FM programs from parent company Cumulus: "Nash Nights Live" and "The Blair Garner Show." On weekends, "Bob Kingsley's Country Top 40" is heard. KHKI's studios are in Urbandale, Iowa, with other Cumulus Des Moines stations: KJJY, KGGO, KWQW, and KBGG. Its transmitter is located on Northwest 100th Street on the border between Grimes and Johnston. While the maximum power for most FM stations in Iowa is 100,000 watts, KHKI's effective radiated power (ERP) is slightly higher, at 105,000 watts. Because KHKI dates back to 1961, it is grandfathered at the higher output.