US Bridges

I 20 over Terrapin Skin Creek

Good

Rankin County, Mississippi · 0.8 MI E SR 18 · Structure no. 11000200610559B

Built
1966
59 years old
Condition
Good
inspected December 2024
Type
Culvert
Concrete
Length
45 ft
2 main spans
Daily traffic
22,000
2023 count
Owner
State
State Highway Agency

About this bridge

I 20 over Terrapin Skin Creek is a concrete culvert carrying I 20 over Terrapin Skin Creek in Rankin County, Mississippi. It was built in 1966, so it is 59 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 22,000 vehicles a day, roughly 23% of them trucks, projected to reach 24,500 by 2043. The structure is 45 ft (13.7 m) long. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI 20
CrossesTerrapin Skin Creek
Location0.8 MI E SR 18
RouteInterstate 20
Coordinates32.27995, -90.022
Functional classUrban Principal Arterial - Interstate

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.
Culvert8 Very GoodNo problems noted.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69.4 US tons
Inventory rating41.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length45 ft (13.7 m)
Longest span18 ft (5.5 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22,000 (2023)
Projected traffic24,500 by 2043
Trucks23%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 I 20 over Terrapin Skin Creek built?

It was built in 1966, making it 59 years old in 2025.

What condition is I 20 over Terrapin Skin 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 December 2024.

How much traffic does I 20 over Terrapin Skin Creek carry?

About 22,000 vehicles per day (2023 count), of which roughly 23% are trucks.

How long is I 20 over Terrapin Skin Creek?

The structure is 45 ft (13.7 m) long with a longest span of 18 ft (5.5 m).

Who owns I 20 over Terrapin Skin Creek?

It is owned by the State Highway Agency.