US Bridges

SR 18 over White Oak Creek

Good

Smith County, Mississippi · 0.8 MI W SR 541 · Structure no. 310001806509730

Built
1972
53 years old
Condition
Good
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
200 ft
5 main spans
Daily traffic
2,600
2023 count
Owner
State
State Highway Agency

About this bridge

SR 18 over White Oak Creek is a prestressed concrete stringer/multi-beam or girder carrying SR 18 over White Oak Creek in Smith County, Mississippi. It was built in 1972, so it is 53 years old, older 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,600 vehicles a day, roughly 14% of them trucks, projected to reach 2,700 by 2043. The structure is 200 ft (61 m) long and 42 ft wide. If it were closed, the detour would be 13 mi (21 km).

CarriesSR 18
CrossesWhite Oak Creek
Location0.8 MI W SR 541
RouteState Highway 18
Coordinates32.07019, -89.70137
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67.8 US tons
Inventory rating40.6 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length200 ft (61 m)
Longest span40 ft (12.2 m)
Deck width42 ft (12.8 m)
Roadway width38 ft (11.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,600 (2023)
Projected traffic2,700 by 2043
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13 mi (21 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 White Oak Creek built?

It was built in 1972, making it 53 years old in 2025.

What condition is SR 18 over White Oak Creek 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 2023.

How much traffic does SR 18 over White Oak Creek carry?

About 2,600 vehicles per day (2023 count), of which roughly 14% are trucks.

How long is SR 18 over White Oak Creek?

The structure is 200 ft (61 m) long with a longest span of 40 ft (12.2 m) and a deck 42 ft wide.

Who owns SR 18 over White Oak Creek?

It is owned by the State Highway Agency.