US Bridges

I-81; FO47; FO64 over Sloan Branch

Fair

Pulaski County, Virginia · 1.36-RTE11/100;2.96-RTE99 · Structure no. 000000000014476

Built
1960
65 years old
Condition
Fair
inspected August 2023
Type
Culvert
Concrete
Length
21 ft
2 main spans
Daily traffic
43,842
2022 count
Owner
State
State Highway Agency

About this bridge

I-81; FO47; FO64 over Sloan Branch is a concrete culvert carrying I-81; FO47; FO64 over Sloan Branch in Pulaski County, Virginia. It was built in 1960, so it is 65 years old, older 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 43,842 vehicles a day, roughly 1% of them trucks, projected to reach 48,884 by 2045. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 19.9 mi (32 km).

Location

Open in Google Maps
CarriesI-81; FO47; FO64
CrossesSloan Branch
Location1.36-RTE11/100;2.96-RTE99
RouteInterstate 81
CountyPulaski County
StateVirginia
Coordinates37.0009, -80.77036
Functional classRural Principal Arterial - Interstate

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 protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 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
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length21 ft (6.4 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic43,842 (2022)
Projected traffic48,884 by 2045
Trucks1%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$193.2 million (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was I-81; FO47; FO64 over Sloan Branch built?

It was built in 1960, making it 65 years old in 2025.

What condition is I-81; FO47; FO64 over Sloan Branch 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 I-81; FO47; FO64 over Sloan Branch carry?

About 43,842 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is I-81; FO47; FO64 over Sloan Branch?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m).

Who owns I-81; FO47; FO64 over Sloan Branch?

It is owned by the State Highway Agency.