US Bridges

SR 18 over Terrapin Skin Creek

Fair

Rankin County, Mississippi · 0.7 MI E I 20 · Structure no. 310001806107040

Built
2005
20 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
162 ft
4 main spans
Daily traffic
16,000
2023 count
Owner
State
State Highway Agency

About this bridge

SR 18 over Terrapin Skin Creek is a prestressed concrete continuous stringer/multi-beam or girder carrying SR 18 over Terrapin Skin Creek in Rankin County, Mississippi. It was built in 2005, so it is 20 years old, younger than the Mississippi average of 38.9 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 16,000 vehicles a day, roughly 8% of them trucks, projected to reach 16,000 by 2043. The structure is 162 ft (49.3 m) long and 43 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesSR 18
CrossesTerrapin Skin Creek
Location0.7 MI E I 20
RouteState Highway 18
CountyRankin County
StateMississippi
Coordinates32.26932, -90.0346
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation7: Better than present minimum 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 rating75.3 US tons
Inventory rating45.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length162 ft (49.3 m)
Longest span40 ft (12.2 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,000 (2023)
Projected traffic16,000 by 2043
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemYes

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 Terrapin Skin Creek built?

It was built in 2005, making it 20 years old in 2025.

What condition is SR 18 over Terrapin Skin Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in October 2024.

How much traffic does SR 18 over Terrapin Skin Creek carry?

About 16,000 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is SR 18 over Terrapin Skin Creek?

The structure is 162 ft (49.3 m) long with a longest span of 40 ft (12.2 m) and a deck 43 ft wide.

Who owns SR 18 over Terrapin Skin Creek?

It is owned by the State Highway Agency.