US Bridges

SR 18 over Unnamed Stream

Good

Copiah County, Mississippi · 0.2 MI W Hinds Cl · Structure no. 310001801502430

Built
2024
1 years old
Condition
Good
inspected August 2024
Type
Culvert
Concrete
Length
28 ft
2 main spans
Daily traffic
2,000
2023 count
Owner
State
State Highway Agency

About this bridge

SR 18 over Unnamed Stream is a concrete culvert carrying SR 18 over Unnamed Stream in Copiah County, Mississippi. It was built in 2024, so it is 1 years old, younger than the Mississippi average of 38.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,000 vehicles a day, roughly 14% of them trucks, projected to reach 2,000 by 2043. The structure is 28 ft (8.5 m) long. If it were closed, the detour would be 69 mi (111 km).

Location

Open in Google Maps
CarriesSR 18
CrossesUnnamed Stream
Location0.2 MI W Hinds Cl
RouteState Highway 18
CountyCopiah County
StateMississippi
Coordinates32.04639, -90.62838
Functional classRural Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length28 ft (8.5 m)
Longest span14 ft (4.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,000 (2023)
Projected traffic2,000 by 2043
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed69 mi (111 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 18 over Unnamed Stream built?

It was built in 2024, making it 1 years old in 2025.

What condition is SR 18 over Unnamed Stream in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2024.

How much traffic does SR 18 over Unnamed Stream carry?

About 2,000 vehicles per day (2023 count), of which roughly 14% are trucks.

How long is SR 18 over Unnamed Stream?

The structure is 28 ft (8.5 m) long with a longest span of 14 ft (4.3 m).

Who owns SR 18 over Unnamed Stream?

It is owned by the State Highway Agency.