US Bridges

Kirby Road / FO47 over Pine Run

Good

Pulaski County, Virginia · 2.55-WYTHECO; 0.08-RTE100 · Structure no. 000000000014443

Built
1924
101 years old
Condition
Good
inspected November 2023
Type
Slab
Concrete
Length
33 ft
1 main span
Daily traffic
561
2017 count
Owner
State
State Highway Agency

About this bridge

Kirby Road / FO47 over Pine Run is a concrete slab carrying Kirby Road / FO47 over Pine Run in Pulaski County, Virginia. It was built in 1924, so it is 101 years old, older than the Virginia average of 50.7 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 561 vehicles a day, projected to reach 640 by 2045. The structure is 33 ft (10.1 m) long and 24 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesKirby Road / FO47
CrossesPine Run
Location2.55-WYTHECO; 0.08-RTE100
RouteInterstate 0F047
CountyPulaski County
StateVirginia
Coordinates36.9917, -80.79343
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating63.1 US tons
Inventory rating49.1 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckOther
Main spans1
Design loadHL 93
Structure length33 ft (10.1 m)
Longest span29 ft (8.9 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic561 (2017)
Projected traffic640 by 2045
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Kirby Road / FO47 over Pine Run built?

It was built in 1924, making it 101 years old in 2025.

What condition is Kirby Road / FO47 over Pine Run in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in November 2023.

How much traffic does Kirby Road / FO47 over Pine Run carry?

About 561 vehicles per day (2017 count).

How long is Kirby Road / FO47 over Pine Run?

The structure is 33 ft (10.1 m) long with a longest span of 29 ft (8.9 m) and a deck 24 ft wide.

Who owns Kirby Road / FO47 over Pine Run?

It is owned by the State Highway Agency.