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SH 257 Ml over US 34 Bypass

Weld County, Colorado · rated Good in the 2025 National Bridge Inventory

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

SH 257 Ml over US 34 Bypass in Weld County, Colorado, 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 1999, making it 26 years old at the 2025 inventory.
It carries about 8,800 vehicles a day (traffic count year 2020).
Its listed owner is the state highway agency.
It is one of 211 of the 608 inventoried bridges in Weld County rated good (34.7%); 21 (3.5%) 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	Continuous prestressed concrete stringer or multi-beam girder
Length	about 240 ft
Location	West of Greeley
NBI structure number	C-17-FO
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
I 25 Ml over Draw	2004	102,000	Fair
I25 Ml over Draw	2004	102,000	Fair
I 25 ML & Ramps over Channel Md-b	2000	91,000	Good
I 25 Ml and Fr Rds over Lower Boulder Ditch	2000	91,000	Good
I 25 Ml Nbnd over SH 60 Ml	2023	86,000	Good
I 25 Ml Sbnd over Weld County Road 46	2022	83,000	Good