US Bridges

Big Hill Road over Colliers Creek

PoorPosted for load

Rockbridge County, Virginia · 0.10 to 649 & 0.50 to 647 · Structure no. 000000000015535

Built
1932
93 years old
Condition
Poor
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
25 ft
1 main span
Daily traffic
154
2022 count
Owner
State
State Highway Agency

About this bridge

Big Hill Road over Colliers Creek is a steel stringer/multi-beam or girder carrying Big Hill Road over Colliers Creek in Rockbridge County, Virginia. It was built in 1932, 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 154 vehicles a day, roughly 1% of them trucks, projected to reach 172 by 2042. The structure is 25 ft (7.6 m) long and 22 ft wide. If it were closed, the detour would be 28 mi (45 km).

CarriesBig Hill Road
CrossesColliers Creek
Location0.10 to 649 & 0.50 to 647
RouteCounty Highway 646
Coordinates37.82653, -79.59666
Functional classRural Minor Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionDecember 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be 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 rating41.4 US tons
Inventory rating31.9 US tons

Structure

MaterialSteel
DeckWood or timber
Main spans1
Design loadHS 20 + Mod
Structure length25 ft (7.6 m)
Longest span22 ft (6.8 m)
Deck width22 ft (6.7 m)
Roadway width21 ft (6.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic154 (2022)
Projected traffic172 by 2042
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed28 mi (45 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 Big Hill Road over Colliers Creek built?

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

What condition is Big Hill Road over Colliers Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in December 2024.

How much traffic does Big Hill Road over Colliers Creek carry?

About 154 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is Big Hill Road over Colliers Creek?

The structure is 25 ft (7.6 m) long with a longest span of 22 ft (6.8 m) and a deck 22 ft wide.

Who owns Big Hill Road over Colliers Creek?

It is owned by the State Highway Agency.