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Ia 100 EB over Ellis Rd Silver Creek

Linn County, Iowa · rated Good in the 2025 National Bridge Inventory

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled August 20, 2026

Ia 100 EB over Ellis Rd Silver Creek in Linn County, Iowa, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
It was built in 2016, making it 9 years old at the 2025 inventory.
It carries about 3,150 vehicles a day (traffic count year 2022).
Its listed owner is the state highway agency.
It is one of 182 of the 511 inventoried bridges in Linn County rated good (35.6%); 34 (6.7%) are rated poor.
A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.

Component ratings


Structure	Prestressed concrete stringer or multi-beam girder
Length	about 602 ft
Location	2.8 Mi. N of US 218/30
NBI structure number	000000000700635
Condition class	Good

Source: FHWA National Bridge Inventory, 2025 data as reported by the Iowa department of transportation.

Bridge	Built	Vehicles/day	Condition
I-380 over E and F Ave NW Cedar Rvr	1979	57,600	Fair
SB I-380 over Cc RR & Ash Pit	1979	41,000	Fair
NB I-380 over Cc RR	1980	38,800	Fair
SB I-380 over Cc RR	1980	38,800	Fair
NB I-380 over H Ave NE	1980	38,800	Fair
SB I-380 over H Ave NE	1980	38,800	Good