US Bridges

I95 over Mingo Swamp

Fair

Johnston County, North Carolina · 1.4 MI S JCT NC50 · Structure no. 000000001010001

Built
1970
55 years old
Condition
Fair
inspected April 2023
Type
Culvert
Concrete Continuous
Length
50 ft
4 main spans
Daily traffic
59,000
2019 count
Owner
State
State Highway Agency

About this bridge

I95 over Mingo Swamp is a concrete continuous culvert carrying I95 over Mingo Swamp in Johnston County, North Carolina. It was built in 1970, so it is 55 years old, older than the North Carolina average of 38.7 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 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 59,000 vehicles a day, roughly 23% of them trucks, projected to reach 118,000 by 2040. The structure is 50 ft (15.2 m) long. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesI95
CrossesMingo Swamp
Location1.4 MI S JCT NC50
RouteInterstate 95
CountyJohnston County
StateNorth Carolina
Coordinates35.35661, -78.552
Functional classRural Principal Arterial - Interstate

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46 US tons
Inventory rating35.9 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans4
Design loadHS 20 + Mod
Structure length50 ft (15.2 m)
Longest span12 ft (3.6 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic59,000 (2019)
Projected traffic118,000 by 2040
Trucks23%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 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 I95 over Mingo Swamp built?

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

What condition is I95 over Mingo Swamp 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 April 2023.

How much traffic does I95 over Mingo Swamp carry?

About 59,000 vehicles per day (2019 count), of which roughly 23% are trucks.

How long is I95 over Mingo Swamp?

The structure is 50 ft (15.2 m) long with a longest span of 12 ft (3.6 m).

Who owns I95 over Mingo Swamp?

It is owned by the State Highway Agency.