Home › Mississippi › Copiah County › SR 18 over Bayou Pierre River

SR 18 over Bayou Pierre River

Copiah County, Mississippi · rated Good in the 2025 National Bridge Inventory

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

SR 18 over Bayou Pierre River in Copiah County, Mississippi, 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 2019, making it 6 years old at the 2025 inventory.
It carries about 1,600 vehicles a day (traffic count year 2023).
Its listed owner is the state highway agency.
It is one of 61 of the 267 inventoried bridges in Copiah County rated good (22.8%); 15 (5.6%) 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 steel stringer or multi-beam girder
Length	about 1,712 ft
Location	8.5 Mi W SR 27 South
NBI structure number	310001801501930
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
I 55 over Henry Road	1960	15,500	Fair
I 55 over Henry Road	1960	15,500	Fair
I 55 over Gallman Road	1963	13,000	Fair
I 55 over Gallman Road	1963	13,000	Fair
I 55 over Clear Creek Road	1963	13,000	Poor
I 55 over Clear Creek Road	1963	13,000	Poor