US Bridges

I77 Nbl & Ramp over Caldwell Station Creek

Fair

Mecklenburg County, North Carolina · 0.2 Mi. N. Jct. SR2145 · Structure no. 000000001190453

Built
1975
50 years old, rebuilt 1992
Condition
Fair
inspected April 2023
Type
Culvert
Concrete Continuous
Length
21 ft
2 main spans
Daily traffic
36,500
2020 count
Owner
State
State Highway Agency

About this bridge

I77 Nbl & Ramp over Caldwell Station Creek is a concrete continuous culvert carrying I77 Nbl & Ramp over Caldwell Station Creek in Mecklenburg County, North Carolina. It was built in 1975 and reconstructed in 1992, so it is 50 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 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 36,500 vehicles a day, roughly 16% of them trucks, projected to reach 73,000 by 2040. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesI77 Nbl & Ramp
CrossesCaldwell Station Creek
Location0.2 Mi. N. Jct. SR2145
RouteInterstate 77
CountyMecklenburg County
StateNorth Carolina
Coordinates35.44562, -80.86852
Functional classUrban 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 protection7 GoodSome minor problems.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 spans2
Design loadHS 20 + Mod
Structure length21 ft (6.4 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic36,500 (2020)
Projected traffic73,000 by 2040
Trucks16%
Lanes on structure3
Traffic directionOne-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 I77 Nbl & Ramp over Caldwell Station Creek built?

It was built in 1975, making it 50 years old in 2025. It was reconstructed in 1992.

What condition is I77 Nbl & Ramp over Caldwell Station 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 April 2023.

How much traffic does I77 Nbl & Ramp over Caldwell Station Creek carry?

About 36,500 vehicles per day (2020 count), of which roughly 16% are trucks.

How long is I77 Nbl & Ramp over Caldwell Station Creek?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m).

Who owns I77 Nbl & Ramp over Caldwell Station Creek?

It is owned by the State Highway Agency.