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The interior of the Kaiser Steel mill at Fontana about 1949, steel framing and machinery under a high roof.Los Angeles Daily News / CC BY 4.0 via Wikimedia Commons
🏭Industrial

Kaiser Steel Mill Site

Part ofRiverside & the Citrus Belt

The mill that made Fontana a steel town, gave the country Kaiser Permanente, and drew a color line at Base Line Road.

Duration
A drive-by.
🎟
Admission
No public access. The plant is private and working.
📅
Best Season
Year round.

The Story

Henry Kaiser needed steel faster than the East could ship it. He had seven shipyards turning out Liberty ships and no West Coast mill to feed them, so in 1942, on federal wartime loans, he broke ground on Fontana vineyard and chicken ranch, fifty miles inland and out of range of whatever the Japanese navy might do to a coastal plant. The first blast furnace fired on December 30, 1942. He called it Big Bess, after his wife. Kaiser had made his name a decade earlier in the consortium that built Hoover Dam.

It grew into the largest steel mill west of the Mississippi, ran hard through Korea and the Cold War, and employed about ten thousand people. It also produced a hospital. Kaiser and Dr. Sidney Garfield opened fifty beds here in 1943 on a prepaid plan for millworkers and their families, and after the war they opened the plan to everyone. That is Kaiser Permanente.

The boom pulled workers west, and the town sorted them. Black families were kept north of Base Line Road. In the fall of 1945 O'Day Short bought five acres south of it and moved his family in. Vigilantes told him to get out and the Chamber of Commerce offered to buy him out; he refused and went to the FBI. On December 16 the house went up in a fireball. Helen Short and the children, Barry and Carol Ann, were dead within a day, and O'Day lived a month. The arson investigator the NAACP brought in called the fire deliberate. The county called it an accident and closed the case. Fontana renamed the neighborhood elementary school for the family in 2025.

Japanese and Korean steel undercut the mill and it shut in December 1983. California Steel Industries still rolls imported slabs on four hundred of the acres. In 1994 a Chinese crew took the rest apart and rebuilt it as a mill in China. What was left got paved in 1997 for a two-mile NASCAR oval, which ran its last race in February 2023 and is being replaced by warehouses.

There is no visitor access to any of it. You drive Cherry Avenue and look.

Visitor Info

Time Needed
A drive-by.
🎟
Admission
No public access. The plant is private and working.
📅
Best Season
Year round.
🛣️
Highway
I-10

On the Map

Nearby

The closest stops worth working into your route

culinary8.4 mi away
Graber Olive House
The oldest business in Ontario, a cannery of five hundred brine vats — shut since the pandemic and in foreclosure.
roadside8.7 mi away
Wigwam Motel
Nineteen concrete teepees on Foothill Boulevard, the last of Frank Redford's Wigwam Villages and still renting rooms.
recreational9.5 mi away
Mount Rubidoux
The mountain all of Riverside walks — and the half-acre at the summit the city sold rather than go to court.
historical10 mi away
Riverside Chinatown Site
Riverside's second Chinatown — an empty lot on purpose, with eighty percent of it still underground.
historical10 mi away
Harada House
The 1884 cottage a Japanese American family bought in their children's names, and kept in court.
cultural11 mi away
Planes of Fame Air Museum
On the field where the country smelted its surplus warplanes — and about thirty of the aircraft here still fly.

Historical markers nearby

Roadside plaques and monuments within a short detour

Marker3.3 mi away
United States Rabbit Experimental Station
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Marker6.4 mi away
Cucamonga Rancho Winery
Rancho Cucamonga
Marker6.4 mi away
Tapia Adobe (Site of)
Rancho Cucamonga
Marker8.2 mi away
Cornelius and Mercedes Jenson Ranch
Rubidoux
Marker8.4 mi away
Site of Louis Rubidoux House
Rubidoux
Marker8.4 mi away
Site of Old Rubidoux Grist Mill
Rubidoux