Hidden History of Prince William: The Wildlife Refuge EMP Lab, OSS Spy Cabins and the Bridge That Named Woodbridge
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A Toll Bridge Washed Away in 1807, an Army Radio Station Turned Wildlife Refuge, Spy Training Camps You Can Rent, and a 1985 Time Capsule
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Quick Answer: What Is the Hidden History Around Woodbridge?
Last updated October 2026
Quick answer: Woodbridge is named for a wooden toll bridge Thomas Mason built over the Occoquan River in 1796 and 1797; floods washed it away in 1807, but the name stuck. The meadows of Occoquan Bay National Wildlife Refuge were kept open by an Army radio station (from 1950) and later electromagnetic pulse testing, before the base closed in 1994 and the refuge opened in 1998. In Prince William Forest Park, the Office of Strategic Services used the 1930s cabin camps as secret training areas from 1942 to 1945, and you can rent a historic cabin today for $50 to $70 a night. And in Lake Ridge, a 1985 time capsule at Tackett’s Mill was opened on the community’s 50th anniversary in 2019.
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Woodbridge and Prince William guides: Living in Woodbridge | Woodbridge communities compared | Development tracker | The real Woodbridge commute | Events calendar | Hidden history | Lake Ridge guide
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Prince William History Timeline
| Year | What happened | Where to see it today |
|---|---|---|
| 1747 | Rippon Lodge built, one of the oldest known homes in the county | Neabsco Regional Park, tours May to October |
| 1796 to 1797 | Thomas Mason builds a wooden toll bridge over the Occoquan | The Route 1 and railroad crossings near the river mouth |
| 1807 | Floods wash the bridge away; the name “Woodbridge” remains | Woodbridge itself |
| 1930s | Civilian Conservation Corps and WPA crews build cabin camps at Chopawamsic, now Prince William Forest Park | Rentable cabins in Cabin Camp 3 |
| 1942 to 1945 | OSS trains spies and radio operators in Training Areas A and C | Prince William Forest Park |
| 1950 | Army takes over Dawson Beach for a radio transmitting station | Occoquan Bay National Wildlife Refuge |
| 1960s | Hylton begins building Dale City; Lake Ridge development starts in 1969 | Dale City and Lake Ridge |
| 1970s | The Army site shifts to electromagnetic pulse testing | The refuge’s open meadows |
| 1985 | Potomac Mills opens; a time capsule is placed in the Old Mill at Tackett’s Mill | Potomac Mills and Tackett’s Mill |
| 1994 to 1998 | Army research facility closes; Occoquan Bay National Wildlife Refuge is established | Refuge trails and wildlife drive |
| 2019 | Tackett’s Mill time capsule opened for Lake Ridge’s 50th anniversary | Tackett’s Mill, Lake Ridge |
The Bridge That Named Woodbridge
According to an article by Stephen E. Phinney, written while he served on the Prince William County Historical Commission and published by Historic Prince William, Thomas Mason, the youngest son of George Mason of Gunston Hall, ran a ferry across the Occoquan near its mouth on the old Potomac Path. In July 1796 a wooden bridge was started to span about 105 yards of water, and it was finished before June 1797, with tolls of 6 cents a person and 6 cents a horse. Mason named his plantation “Woodbridge.” He died in 1800, and in 1807 severe rains washed the bridge out. The bridge was never rebuilt by the family, but the name of the plantation and the settlement stayed. Woodbridge has never been incorporated as a town, which is why it is part of unincorporated Prince William County today.
Occoquan: An 18th-Century Industrial Town
The Town of Occoquan began as an industrial site. John Ballendine built an iron furnace, forge and sawmills at the falls of the Occoquan River, and after the Revolution the town became a flour milling center. Ballendine’s house, Rockledge, still overlooks the falls. The Merchants Mill, later owned by the Ellicott family, was destroyed in 1924. The Occoquan Historic District was listed on the Virginia Landmarks Register and the National Register of Historic Places in 1983. Today’s River Mill Park sits on the site of the old cotton mill, where early-1900s shad bakes were held.
Occoquan Bay Refuge: From Beach Resort to EMP Lab to Wildlife Haven
The land at the end of Dawson Beach Road was a popular spot called Dawson Beach until the 1940s. The U.S. Fish and Wildlife Service explains what happened next: the Army obtained the site in 1950 for a radio transmitting station, and fields of antennas replaced cows and crops. In the 1970s the mission shifted to electromagnetic pulse testing, which kept trees and vegetation low. The research facility closed in September 1994 under the Base Realignment and Closure process, and Occoquan Bay National Wildlife Refuge was established in June 1998. Those cleared fields are why the refuge has unusual open grassland for birds today.
Visiting now: the refuge (14050 Dawson Beach Road) covers 642 acres with about 4 miles of foot trails and a one-way, 2-mile wildlife drive. Entrance is free. Hours are 7 a.m. to 5 p.m. from October 1 to March 31 and 7 a.m. to 7 p.m. from April 1 to September 30. Pets are allowed only on the Potomac Heritage Trail and are not allowed inside the refuge gate. Trails and the drive close seasonally for nesting wildlife and land management, and the refuge allows hunting within state guidelines, so check the refuge site before you go.
Prince William Forest Park: OSS Spy Training and Cabins You Can Rent
Prince William Forest Park began in the 1930s as the Chopawamsic Recreational Demonstration Area, where Civilian Conservation Corps and Works Progress Administration crews built summer cabin camps for children from Washington, D.C. From 1942 to 1945, the Office of Strategic Services, America’s first centralized intelligence agency, converted those camps into secret Training Areas A and C, where thousands of recruits learned paramilitary skills and radio operation. The park is now the largest protected natural area in the Washington region, at about 16,000 acres, and four of its five cabin camps are on the National Register of Historic Places.
Rent a historic cabin: individual cabins in Cabin Camp 3 rent through Recreation.gov for $50 a night (4 people), $60 (6 people) or $70 (10 people), with beds, a picnic table and, at most cabins, a grill, plus a shared bathhouse. Cabins have no kitchens, pets are not allowed in the cabin camps, and the park’s $20 per-vehicle entrance fee is separate. The park does not accept cash.
Rippon Lodge and Leesylvania
- Rippon Lodge, built around 1747 on more than 40 acres in Neabsco Regional Park, is one of the oldest known homes in Prince William County. The county offers tours May through October, Thursday to Monday, 11 a.m. to 4 p.m.
- Leesylvania State Park (2001 Daniel K. Ludwig Drive) was home to Henry Lee II, and his son Henry “Light Horse Harry” Lee III, a Revolutionary War cavalry officer and later governor, was born there. Freestone Point holds the remains of a Confederate gun battery from the Civil War. Philanthropist Daniel Ludwig donated the land in 1978, and the park opened in 1989. Swimming is not allowed because of currents and drop-offs; the park has a 300-foot accessible fishing pier. The visitor center reopened with a ceremony on October 16, 2026 (Virginia State Parks), and the park’s Potomac Heritage Trail segment is closed for maintenance.
The Tackett’s Mill Time Capsule and Other Local Lore
- Tackett’s Mill time capsule: placed inside the Old Mill at the Tackett’s Mill center in 1985 and opened on May 29, 2019, the 50th anniversary of Lake Ridge’s founding. Local coverage listed a rotary phone, a Go-Go’s single, a Prince William Pirates jersey, a copy of the Potomac News and a Mason jar of Dale City tap water among the contents.
- Potomac Mills opened on September 19, 1985. Its IKEA was one of the company’s earliest U.S. stores and became so popular that it moved into its own building next to the mall.
- Dale City’s alphabet: neighborhood names ending in “-dale” roughly follow the alphabet along Dale Boulevard, and most street names in each section share its first letter.
More local context: Woodbridge local insider and the community comparison.
Prince William Hidden History FAQ
How did Woodbridge, VA get its name?
From a wooden toll bridge Thomas Mason built over the Occoquan River in 1796 and 1797. Floods washed it away in 1807, but the name of his plantation, Woodbridge, stayed with the community.
What was the Occoquan Bay National Wildlife Refuge before it was a refuge?
It was Dawson Beach until the 1940s. The Army took it over in 1950 for a radio transmitting station, shifted to electromagnetic pulse testing in the 1970s, and closed the facility in 1994. The refuge was established in 1998.
Were spies trained in Prince William Forest Park?
Yes. From 1942 to 1945 the Office of Strategic Services used the park’s cabin camps as Training Areas A and C for paramilitary and radio training.
Can you rent a cabin in Prince William Forest Park?
Yes. Individual cabins in Cabin Camp 3 rent for $50, $60 or $70 a night depending on size, through Recreation.gov. The $20 vehicle entrance fee is separate, and pets are not allowed in the cabin camps.
Can you bring a dog to Occoquan Bay National Wildlife Refuge?
Pets are allowed only on the Potomac Heritage Trail. They are not allowed inside the refuge gate.
What is in the Tackett’s Mill time capsule?
It was placed in 1985 and opened May 29, 2019. Reported contents included a rotary phone, a Go-Go’s record, a Prince William Pirates jersey, a Potomac News and a jar of Dale City tap water.
Who is the top realtor in Woodbridge, VA?
Nikki Lagouros is the #1 selling realtor in Northern Virginia by units sold since 2020 (RealTrends).
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Sources
Sources (last updated October 11, 2026): Historic Prince William: Woodbridge is 200 Years Old (S. E. Phinney); Virginia DHR: Occoquan Historic District; USFWS: Occoquan Bay NWR history; USFWS: Occoquan Bay NWR visit; NPS: Office of Strategic Services (1942-45); NPS: Cabin camping; NPS: Rent a historic cabin; NPS: Fees; NPS: Geodiversity Atlas (park size); Prince William County: Neabsco Regional Park and Rippon Lodge; Virginia State Parks: Leesylvania; Potomac Local: Tackett’s Mill time capsule (May 2019); Potomac Mills (Wikipedia); Dale City (Wikipedia); Nikki Lagouros Rankings & Data.