Needles (Colorado R. Bridge)

The BNSF Colorado River bridge sits about 12 miles south of downtown Needles, near the hamlet of Topock on the California-Arizona border. Access is via the Park Moabi exit off I-40 — the first or last California exit depending on your direction of travel. From the exit, follow the National Old Trails Highway (the predecessor of Route 66) as it curves south under I-40 toward the bridge approaches. On the California side, the old highway passes directly beneath one of the approach spans, which still bears the faded "Santa Fe" lettering.

The bridge sits within the Havasu National Wildlife Refuge, so the setting is surprisingly wild for such a busy freight corridor. With 60-70 train movements per day, waits are short. BNSF's maximum authorized speeds here are 70 mph for freight and 90 mph for Amtrak, so trains move briskly across the structure. Be aware that this is a somewhat tricky location to photograph: railroad blogger Paul Walters notes that California Highway Patrol regularly patrols the old highway segment near the bridge approaches. The dirt pull-offs are informal and the terrain is rough — a high-clearance vehicle is recommended.

Needles sits at 488 feet elevation in the heart of the Mojave Desert, and the bridge area near Topock shares that stark desert character. The Colorado River cuts through volcanic terrain here, flanked by the Needles mountain range (the jagged pinnacles that gave the town its name) and the Chemehuevi Mountains. Cottonwood and tamarisk trees line the riverbanks, providing rare splashes of green against the ochre desert floor.

Summer temperatures in Needles regularly exceed 110°F and have been recorded near 120°F, making it one of the hottest cities in the United States. The extreme heat creates visible shimmering mirages above the ballast. Winter days are mild — January highs average around 65°F — with clear, calm conditions ideal for photography. Snow is essentially nonexistent here. Rainfall averages only 4.6 inches per year. The dry air and remote desert location mean dark skies at night, though the bridge itself is not easily photographed after dark from accessible vantage points.

The bridge is part of BNSF Railway's Southern Transcon, the premier freight corridor linking Southern California ports with Chicago. According to railfan guides and operational data, approximately 60-70 trains pass through Needles daily. The mix is predominantly intermodal double-stack containers and trailer-on-flatcar (TOFC), along with manifest freight, unit grain trains, auto racks, and occasional military equipment moves.

BNSF power typically consists of GE ES44C4 and EMD SD70ACe units, with run-through power from other Class I railroads appearing on intermodal trains. The UPS Z-train (Los Angeles to Willow Springs) is one of the hottest priority trains on the railroad and comes through Needles for crew changes. Needles is a crew change point on the boundary between BNSF's Needles Subdivision (west to Barstow, 171 miles) and Seligman Subdivision (east to Winslow, AZ, ~225 miles).

Amtrak's Southwest Chief crosses the bridge once daily in each direction, but the scheduled times — westbound #3 at approximately 1:22 AM and eastbound #4 at approximately 1:18 AM — make it impractical for most railfans to observe.

Access to photograph the bridge requires some effort. The primary approach is via the Park Moabi exit off I-40. Turn right (east) onto the National Old Trails Highway and follow this potholed road as it curves south beneath I-40 toward the bridge. From the California side of the approach embankment, you can shoot westbound trains crossing the river with the Arizona bluffs as backdrop. As railroad photographer Paul Walters notes, you may need to climb the embankment on the highway right-of-way to get a clear angle on westbound movements.

A longer lens in the 200-400mm range helps isolate trains on the bridge structure. For wider establishing shots showing the bridge, river, and desert mountains, a 24-70mm range works well. Morning light illuminates the west-facing approach from Arizona; afternoon light works better for trains heading east. The bridge runs roughly north-south as it crosses the river, so midday overhead light can be harsh.

Note that the adjacent Old Trails Arch Bridge (1916), visible nearby, now carries a gas pipeline and is not accessible to pedestrians. The I-40 highway bridge is also adjacent but does not offer safe pullover spots for photography.

Rail crossed the Colorado River at this location beginning in 1883, when the Atlantic and Pacific Railroad (a predecessor of the Atchison, Topeka and Santa Fe Railway) completed a timber trestle bridge near what is now Topock. The 1,700-foot wooden structure was vulnerable to the Colorado's unpredictable spring floods, which destroyed it three times — in 1884, 1886, and 1888.

The railroad relocated the crossing about 10 miles downstream to a narrower point with solid rock footings, completing the Red Rock Bridge, a steel cantilever structure built by the Phoenix Iron Company, in May 1890. This bridge served the railroad for over fifty years, but increasing train weights and heavy wartime traffic during World War II demanded a stronger crossing. The current bridge — a 1,500-foot structure with three 350-foot Warren deck trusses, four 100-foot deck girder spans, and one 50-foot beam span — was built by the American Bridge Company and opened on March 7, 1945.

The displaced Red Rock Bridge was converted to carry Route 66 automobile traffic in 1947. After I-40 was completed with its own bridge in 1967, the Red Rock Bridge was dismantled in 1976. The 1916 Old Trails Arch Bridge, once Route 66's river crossing, survives nearby carrying a PG&E gas pipeline.

Needles itself exists because of the railroad. Founded in 1883 as a crew change point, the town's landmark El Garces Harvey House (1908), designed by Francis W. Wilson, was considered the "crown jewel" of the Fred Harvey hotel chain. It cost $250,000 to build (about $8.2 million today) and featured 60 guestrooms. The building was listed on the National Register of Historic Places and now serves as the Amtrak station and community space.

The Topock bridge is one of the few places on the Southern Transcon where BNSF's busy freight corridor crosses a major river in dramatic fashion. The combination of a 1945-vintage steel truss bridge, the wide Colorado River, stark desert scenery, and 60-70 daily train movements makes this a compelling railfan destination with historical depth.

The bridge area also sits within the Havasu National Wildlife Refuge, and the nearby cluster of historic bridges — the current 1945 railroad bridge, the I-40 highway bridge, and the surviving 1916 Old Trails Arch Bridge — tells the story of 140 years of Colorado River crossings. Needles' connection to Route 66 and the Dust Bowl migration (immortalized in Steinbeck's The Grapes of Wrath and the 1969 film Easy Rider, both of which feature Topock bridge scenes) adds cultural significance beyond the railfan appeal.