Three Rivers Trail

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3 Rivers Trail 1st Avenue Overpass (Humboldt County, Iowa)
Pony/through plate girder bridge over 1st Avenue on Trail
Open to pedestrians

3 Rivers Trail Arch Bridge (Humboldt County, Iowa)
Closed-spandrel arch bridge over Unnamed Stream on Trail
Open to pedestrians only

3 Rivers Trail East Fork Des Moines River Bridge (Humboldt County, Iowa)
Deck plate girder bridge over East Fork Des Moines River on Trail
Open to pedestrians only

3 Rivers Trail Overpass (Humboldt County, Iowa)
Pony/through plate girder bridge over 3 Rivers Trail on 3 Rivers Trail
Open to pedestrians

3 Rivers Trail Unnamed Tributary of Pilot Creek (Pocahontas County, Iowa)
Pony plate girder bridge over Crooked Creek on 3 Rivers Trail
Open to traffic

3 Rivers Trail West Fork Des Moines River Bridge (Humboldt County, Iowa)
Deck plate girder bridge over Des Moines River on Trail
Open to pedestrians only

Gotch Park Bridge (Humboldt County, Iowa)
Built for the Minneapolis St Louis Railway; converted for trail use in 1991
Through truss bridge over East Fork Des Moines River on the Three Rivers Bike Trail at Gotch Park near Humboldt
Open to pedestrians and bicyclists only

Keystone Bridge (Pocahontas County, Iowa)
Stone arch bridge over Crooked Creek on railroad
Open to pedestrians only