US Bridges

SR 18 over Ichusa Creek

Good

Smith County, Mississippi · 0.2 MI E SR 501 · Structure no. 310001806511660

Built
1970
55 years old
Condition
Good
inspected September 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
300 ft
1 main span
Daily traffic
3,300
2023 count
Owner
State
State Highway Agency

About this bridge

SR 18 over Ichusa Creek is a prestressed concrete stringer/multi-beam or girder carrying SR 18 over Ichusa Creek in Smith County, Mississippi. It was built in 1970, so it is 55 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 3,300 vehicles a day, roughly 22% of them trucks, projected to reach 3,300 by 2043. The structure is 300 ft (91.4 m) long and 42 ft wide. If it were closed, the detour would be 37.9 mi (61 km).

CarriesSR 18
CrossesIchusa Creek
Location0.2 MI E SR 501
RouteState Highway 18
Coordinates32.01252, -89.40061
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 inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
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 spans1 (+6 approach)
Design loadHS 20
Structure length300 ft (91.4 m)
Longest span60 ft (18.3 m)
Deck width42 ft (12.8 m)
Roadway width38 ft (11.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,300 (2023)
Projected traffic3,300 by 2043
Trucks22%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed37.9 mi (61 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 Ichusa Creek built?

It was built in 1970, making it 55 years old in 2025.

What condition is SR 18 over Ichusa 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 September 2023.

How much traffic does SR 18 over Ichusa Creek carry?

About 3,300 vehicles per day (2023 count), of which roughly 22% are trucks.

How long is SR 18 over Ichusa Creek?

The structure is 300 ft (91.4 m) long with a longest span of 60 ft (18.3 m) and a deck 42 ft wide.

Who owns SR 18 over Ichusa Creek?

It is owned by the State Highway Agency.