US Bridges

South Main Street over Blacks Run

Fair

Harrisonburg city, Virginia · 0007MILLER CK0007MNMNT Av · Structure no. 000000000020436

Built
1978
47 years old
Condition
Fair
inspected November 2023
Type
Culvert
Concrete
Length
36 ft
4 main spans
Daily traffic
18,299
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

South Main Street over Blacks Run is a concrete culvert carrying South Main Street over Blacks Run in Harrisonburg city, Virginia. It was built in 1978, so it is 47 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 18,299 vehicles a day, projected to reach 20,403 by 2042. The structure is 36 ft (11.1 m) long and 92 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesSouth Main Street
CrossesBlacks Run
Location0007MILLER CK0007MNMNT Av
RouteU.S. Route 11
CountyHarrisonburg city
StateVirginia
Coordinates38.43092, -78.8839
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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74 US tons
Inventory rating44 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans4
Design loadUnknown
Structure length36 ft (11.1 m)
Longest span9 ft (2.6 m)
Deck width92 ft (28 m)
Roadway width64 ft (19.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,299 (2022)
Projected traffic20,403 by 2042
Trucks0%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was South Main Street over Blacks Run built?

It was built in 1978, making it 47 years old in 2025.

What condition is South Main Street over Blacks Run 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 November 2023.

How much traffic does South Main Street over Blacks Run carry?

About 18,299 vehicles per day (2022 count).

How long is South Main Street over Blacks Run?

The structure is 36 ft (11.1 m) long with a longest span of 9 ft (2.6 m) and a deck 92 ft wide.

Who owns South Main Street over Blacks Run?

It is owned by the City or Municipal Highway Agency.