Fernbridge (HM1D4N)

Location: Fortuna, CA 95540 Humboldt County
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Country: United States of America
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N 40° 36.961', W 124° 12.105'

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Dedicated on November 16, 1911 and affectionately known as the "Queen of Bridges", it was the longest reinforced concreted arch structure in the world at the time of its construction. The bridge was designed by John B. Leonard, Civil Engineer, license No. 12, with assistance from county surveyor George W. Conners.

The bridge is 24 feet wide with seven 195-foot arches and is 1,451 feet in length. Originally it had a gravel driving course with 500-foot timber trestle approaches. These were replaced in 1920 with reinforced concrete and pavement. The abutments and piers sit on 150 timber piles, each to a depth of 50 feet below the water line. In 1911 the cost to construct the bridge was $245,967.

The bridge has endured many floods, including the massive flood of 1964. In 1992 the bridge withstood three major earthquakes, one of which was over 7.0 in magnitude.

The "Queen of Bridges" continues to be a stalwart structure for the Eel River Valley.
HM NumberHM1D4N
Series This marker is part of the Native Sons/Daughters of the Golden West series
Year Placed2011
Placed ByFerndale Parlor #93, Native Sons of the Golden West
Marker ConditionNo reports yet
Date Added Wednesday, October 1st, 2014 at 7:26pm PDT -07:00
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Locationbig map
UTM (WGS84 Datum)10T E 398345 N 4496826
Decimal Degrees40.61601667, -124.20175000
Degrees and Decimal MinutesN 40° 36.961', W 124° 12.105'
Degrees, Minutes and Seconds40° 36' 57.66" N, 124° 12' 6.30" W
Driving DirectionsGoogle Maps
Area Code(s)707
Closest Postal AddressAt or near 20 Depot St, Fortuna CA 95540, US
Alternative Maps Google Maps, MapQuest, Bing Maps, Yahoo Maps, MSR Maps, OpenCycleMap, MyTopo Maps, OpenStreetMap

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