US Bridges

Wonju ST over NS Railway

Fair

Roanoke city, Virginia · 0010220BUS 0020 Col Av · Structure no. 000000000021621

Built
1977
48 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
150 ft
3 main spans
Daily traffic
12,550
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Wonju ST over NS Railway is a steel stringer/multi-beam or girder carrying Wonju ST over NS Railway in Roanoke city, Virginia. It was built in 1977, so it is 48 years old, younger than the Virginia average of 50.7 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 12,550 vehicles a day, roughly 1% of them trucks, projected to reach 12,800 by 2040. The structure is 150 ft (45.7 m) long and 82 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesWonju ST
CrossesNS Railway
Location0010220BUS 0020 Col Av
RouteCity Street 0
CountyRoanoke city
StateVirginia
Coordinates37.25085, -79.95702
Functional classUrban Minor Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating78 US tons
Inventory rating60 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3 (+2 approach)
Design loadHS 20 + Mod
Structure length150 ft (45.7 m)
Longest span55 ft (16.8 m)
Deck width82 ft (25 m)
Roadway width58 ft (17.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,550 (2020)
Projected traffic12,800 by 2040
Trucks1%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$944 million (2023 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Wonju ST over NS Railway built?

It was built in 1977, making it 48 years old in 2025.

What condition is Wonju ST over NS 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 August 2023.

How much traffic does Wonju ST over NS Railway carry?

About 12,550 vehicles per day (2020 count), of which roughly 1% are trucks.

How long is Wonju ST over NS Railway?

The structure is 150 ft (45.7 m) long with a longest span of 55 ft (16.8 m) and a deck 82 ft wide.

Who owns Wonju ST over NS Railway?

It is owned by the City or Municipal Highway Agency.