US Bridges

Carlock Creek Rd. over Carlock Creek

Fair

Smyth County, Virginia · .8 to R638;.3 to R774 · Structure no. 000000000017612

Built
1932
93 years old, rebuilt 1988
Condition
Fair
inspected September 2023
Type
Slab
Concrete
Length
22 ft
1 main span
Daily traffic
747
2022 count
Owner
State
State Highway Agency

About this bridge

Carlock Creek Rd. over Carlock Creek is a concrete slab carrying Carlock Creek Rd. over Carlock Creek in Smyth County, Virginia. It was built in 1932 and reconstructed in 1988, so it is 93 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 5 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 747 vehicles a day, roughly 1% of them trucks, projected to reach 833 by 2045. The structure is 22 ft (6.7 m) long and 26 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesCarlock Creek Rd.
CrossesCarlock Creek
Location.8 to R638;.3 to R774
RouteCounty Highway 637
CountySmyth County
StateVirginia
Coordinates36.82077, -81.67714
Functional classRural Minor Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating58 US tons
Inventory rating45 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length22 ft (6.7 m)
Longest span20 ft (6.1 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic747 (2022)
Projected traffic833 by 2045
Trucks1%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Carlock Creek Rd. over Carlock Creek built?

It was built in 1932, making it 93 years old in 2025. It was reconstructed in 1988.

What condition is Carlock Creek Rd. over Carlock Creek 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 September 2023.

How much traffic does Carlock Creek Rd. over Carlock Creek carry?

About 747 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is Carlock Creek Rd. over Carlock Creek?

The structure is 22 ft (6.7 m) long with a longest span of 20 ft (6.1 m) and a deck 26 ft wide.

Who owns Carlock Creek Rd. over Carlock Creek?

It is owned by the State Highway Agency.