US Bridges

South Boston Road over Rt. 29 Bypass Nbl&sbl

Fair

Danville city, Virginia · 1.71RT293 BUS-1.09 Rt 729 · Structure no. 000000000023425

Built
1992
33 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
286 ft
4 main spans
Daily traffic
7,972
2022 count
Owner
State
State Highway Agency

About this bridge

South Boston Road over Rt. 29 Bypass Nbl&sbl is a steel stringer/multi-beam or girder carrying South Boston Road over Rt. 29 Bypass Nbl&sbl in Danville city, Virginia. It was built in 1992, so it is 33 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 7,972 vehicles a day, projected to reach 9,617 by 2042. The structure is 286 ft (87.2 m) long and 54 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesSouth Boston Road
CrossesRt. 29 Bypass Nbl&sbl
Location1.71RT293 BUS-1.09 Rt 729
RouteU.S. Route 58
CountyDanville city
StateVirginia
Coordinates36.58407, -79.35965
Functional classUrban Other Principal 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 inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating78 US tons
Inventory rating60 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadUnknown
Structure length286 ft (87.2 m)
Longest span91 ft (27.6 m)
Deck width54 ft (16.4 m)
Roadway width51 ft (15.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,972 (2022)
Projected traffic9,617 by 2042
Trucks0%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 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$423.5 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was South Boston Road over Rt. 29 Bypass Nbl&sbl built?

It was built in 1992, making it 33 years old in 2025.

What condition is South Boston Road over Rt. 29 Bypass Nbl&sbl 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 2024.

How much traffic does South Boston Road over Rt. 29 Bypass Nbl&sbl carry?

About 7,972 vehicles per day (2022 count).

How long is South Boston Road over Rt. 29 Bypass Nbl&sbl?

The structure is 286 ft (87.2 m) long with a longest span of 91 ft (27.6 m) and a deck 54 ft wide.

Who owns South Boston Road over Rt. 29 Bypass Nbl&sbl?

It is owned by the State Highway Agency.