US Bridges

SR1818 over Southern Railway

Fair

McDowell County, North Carolina · .1 MI.S.JCT.US70 · Structure no. 000000001110350

Built
1971
54 years old
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
93 ft
1 main span
Daily traffic
100
1996 count
Owner
State
State Highway Agency

About this bridge

SR1818 over Southern Railway is a steel stringer/multi-beam or girder carrying SR1818 over Southern Railway in McDowell County, North Carolina. It was built in 1971, so it is 54 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 100 vehicles a day, projected to reach 200 by 2040. The structure is 93 ft (28.3 m) long and 60 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesSR1818
CrossesSouthern Railway
Location.1 MI.S.JCT.US70
RouteState Highway 1818
Coordinates35.68827, -81.99908
Functional classUrban Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating78.9 US tons
Inventory rating47 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length93 ft (28.3 m)
Longest span92 ft (28 m)
Deck width60 ft (18.4 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (1996)
Projected traffic200 by 2040
Trucks0%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR1818 over Southern Railway built?

It was built in 1971, making it 54 years old in 2025.

What condition is SR1818 over Southern Railway 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 March 2024.

How much traffic does SR1818 over Southern Railway carry?

About 100 vehicles per day (1996 count).

How long is SR1818 over Southern Railway?

The structure is 93 ft (28.3 m) long with a longest span of 92 ft (28 m) and a deck 60 ft wide.

Who owns SR1818 over Southern Railway?

It is owned by the State Highway Agency.