US Bridges

Smith Co. 14 over Lyon Creek Bch

Good

Smith County, Mississippi · Sec 18 T10N R14W B · Structure no. SA6500000000121

Built
1989
36 years old
Condition
Good
inspected September 2023
Type
Culvert
Concrete
Length
22 ft
2 main spans
Daily traffic
540
2021 count
Owner
County
County Highway Agency

About this bridge

Smith Co. 14 over Lyon Creek Bch is a concrete culvert carrying Smith Co. 14 over Lyon Creek Bch in Smith County, Mississippi. It was built in 1989, so it is 36 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 540 vehicles a day, roughly 15% of them trucks, projected to reach 810 by 2043. The structure is 22 ft (6.7 m) long. If it were closed, the detour would be 1.9 mi (3 km).

CarriesSmith Co. 14
CrossesLyon Creek Bch
LocationSec 18 T10N R14W B
RouteCounty Highway 383
Coordinates31.83372, -89.44228
Functional classRural Major Collector

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating95 US tons
Inventory rating56.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length22 ft (6.7 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic540 (2021)
Projected traffic810 by 2043
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$550,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Smith Co. 14 over Lyon Creek Bch built?

It was built in 1989, making it 36 years old in 2025.

What condition is Smith Co. 14 over Lyon Creek Bch 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 September 2023.

How much traffic does Smith Co. 14 over Lyon Creek Bch carry?

About 540 vehicles per day (2021 count), of which roughly 15% are trucks.

How long is Smith Co. 14 over Lyon Creek Bch?

The structure is 22 ft (6.7 m) long with a longest span of 10 ft (3 m).

Who owns Smith Co. 14 over Lyon Creek Bch?

It is owned by the County Highway Agency.