US Bridges

Flat Hollow RD/670 over Big Walker Creek

FairPosted for load

Giles County, Virginia · 1.00-RT 669; 0.05-RT 667 · Structure no. 000000000008471

Built
1936
89 years old
Condition
Fair
inspected March 2024
Type
Truss - Thru
Steel
Length
158 ft
1 main span
Daily traffic
227
2014 count
Owner
State
State Highway Agency

About this bridge

Flat Hollow RD/670 over Big Walker Creek is a steel truss - thru carrying Flat Hollow RD/670 over Big Walker Creek in Giles County, Virginia. It was built in 1936, so it is 89 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. Its operating status is: posted for load restriction.

It carries about 227 vehicles a day, projected to reach 368 by 2045. The structure is 158 ft (48.3 m) long and 14 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesFlat Hollow RD/670
CrossesBig Walker Creek
Location1.00-RT 669; 0.05-RT 667
RouteCounty Highway 670
CountyGiles County
StateVirginia
Coordinates37.16229, -80.85952
Functional classRural Local

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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating23 US tons
Inventory rating14 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckWood or timber
Main spans1 (+1 approach)
Design loadHS 20 + Mod
Structure length158 ft (48.3 m)
Longest span128 ft (39 m)
Deck width14 ft (4.3 m)
Roadway width13 ft (4 m)
Vertical clearance over deck14 ft (4.2 m)

Traffic and service

Average daily traffic227 (2014)
Projected traffic368 by 2045
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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$489.2 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Flat Hollow RD/670 over Big Walker Creek built?

It was built in 1936, making it 89 years old in 2025.

What condition is Flat Hollow RD/670 over Big Walker 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 March 2024.

How much traffic does Flat Hollow RD/670 over Big Walker Creek carry?

About 227 vehicles per day (2014 count).

How long is Flat Hollow RD/670 over Big Walker Creek?

The structure is 158 ft (48.3 m) long with a longest span of 128 ft (39 m) and a deck 14 ft wide.

Who owns Flat Hollow RD/670 over Big Walker Creek?

It is owned by the State Highway Agency.