US Bridges

Carlock Creek Road over Carlock Creek

Good

Smyth County, Virginia · 0.3 FR 638; 1.2 to 617 · Structure no. 000000000030443

Built
2017
8 years old
Condition
Good
inspected June 2023
Type
Slab
Prestressed Concrete
Length
53 ft
1 main span
Daily traffic
587
2022 count
Owner
State
State Highway Agency

About this bridge

Carlock Creek Road over Carlock Creek is a prestressed concrete slab carrying Carlock Creek Road over Carlock Creek in Smyth County, Virginia. It was built in 2017, so it is 8 years old, younger 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 587 vehicles a day, roughly 1% of them trucks, projected to reach 655 by 2045. The structure is 53 ft (16.2 m) long and 24 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesCarlock Creek Road
CrossesCarlock Creek
Location0.3 FR 638; 1.2 to 617
RouteCounty Highway 637
CountySmyth County
StateVirginia
Coordinates36.83386, -81.67989
Functional classRural Minor 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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 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 alignment7: Better than present minimum criteria
Operating rating75.9 US tons
Inventory rating59 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHL 93
Structure length53 ft (16.2 m)
Longest span49 ft (15 m)
Deck width24 ft (7.3 m)
Roadway width22 ft (6.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic587 (2022)
Projected traffic655 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 Road over Carlock Creek built?

It was built in 2017, making it 8 years old in 2025.

What condition is Carlock Creek Road over Carlock Creek 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 June 2023.

How much traffic does Carlock Creek Road over Carlock Creek carry?

About 587 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is Carlock Creek Road over Carlock Creek?

The structure is 53 ft (16.2 m) long with a longest span of 49 ft (15 m) and a deck 24 ft wide.

Who owns Carlock Creek Road over Carlock Creek?

It is owned by the State Highway Agency.