US Bridges

NC150 over Seaboard Coastline RR

Poor

Catawba County, North Carolina · 0.1 Mi. W. Jct. SR1815 · Structure no. 000000000350099

Built
1965
60 years old
Condition
Poor
inspected February 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
155 ft
3 main spans
Daily traffic
9,900
2021 count
Owner
State
State Highway Agency

About this bridge

NC150 over Seaboard Coastline RR is a steel stringer/multi-beam or girder carrying NC150 over Seaboard Coastline RR in Catawba County, North Carolina. It was built in 1965, so it is 60 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: open, would be posted or closed except for temporary shoring.

It carries about 9,900 vehicles a day, roughly 14% of them trucks, projected to reach 19,800 by 2040. The structure is 155 ft (47.2 m) long and 33 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesNC150
CrossesSeaboard Coastline RR
Location0.1 Mi. W. Jct. SR1815
RouteState Highway 150
Coordinates35.58133, -80.99364
Functional classRural Principal Arterial - Other

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, would be posted or closed except for temporary shoring
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating80.9 US tons
Inventory rating48 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length155 ft (47.2 m)
Longest span50 ft (15.2 m)
Deck width33 ft (10.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,900 (2021)
Projected traffic19,800 by 2040
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed6.8 mi (11 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was NC150 over Seaboard Coastline RR built?

It was built in 1965, making it 60 years old in 2025.

What condition is NC150 over Seaboard Coastline RR in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in February 2025.

How much traffic does NC150 over Seaboard Coastline RR carry?

About 9,900 vehicles per day (2021 count), of which roughly 14% are trucks.

How long is NC150 over Seaboard Coastline RR?

The structure is 155 ft (47.2 m) long with a longest span of 50 ft (15.2 m) and a deck 33 ft wide.

Who owns NC150 over Seaboard Coastline RR?

It is owned by the State Highway Agency.