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Welty Road over Delta-mendota Canal

Stanislaus County, California · rated Good in the 2025 National Bridge Inventory

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

Welty Road over Delta-mendota Canal in Stanislaus County, California, 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 1949, making it 76 years old at the 2025 inventory.
It carries about 124 vehicles a day (traffic count year 2018).
Its listed owner is the county highway agency.
It is one of 120 of the 386 inventoried bridges in Stanislaus County rated good (31.1%); 52 (13.5%) 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 concrete tee beam
Length	about 110 ft
Location	1.3 Mi S of Gaffery Road
NBI structure number	38C0220
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
State Route 99 over 9TH Street & UP RR	1963	121,000	Fair
State Route 99 over Second St-sb 99 on Ramp	1965	101,000	Good
State Route 99 over SB 99-north St Off Ramp	1965	101,000	Good
State Route 99 over Ceres Main Canal	1941	96,000	Fair
State Route 99 over Mitchell Rd	1965	96,000	Fair
Briggsmore Road over UP RR & Brink Avenue	1976	71,797	Poor