US Bridges

Big Hill RD over Colliers Creek

PoorPosted for load

Rockbridge County, Virginia · 1.40 to 770 & 0.20 to 651 · Structure no. 000000000015536

Built
1928
97 years old
Condition
Poor
inspected December 2024
Type
Slab
Concrete
Length
43 ft
2 main spans
Daily traffic
236
2022 count
Owner
State
State Highway Agency

About this bridge

Big Hill RD over Colliers Creek is a concrete slab carrying Big Hill RD over Colliers Creek in Rockbridge County, Virginia. It was built in 1928, so it is 97 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 236 vehicles a day, projected to reach 263 by 2042. The structure is 43 ft (13.2 m) long and 21 ft wide. If it were closed, the detour would be 34.2 mi (55 km).

Location

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CarriesBig Hill RD
CrossesColliers Creek
Location1.40 to 770 & 0.20 to 651
RouteCounty Highway 646
CountyRockbridge County
StateVirginia
Coordinates37.80401, -79.6019
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
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating13 US tons
Inventory rating8 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length43 ft (13.2 m)
Longest span18 ft (5.6 m)
Deck width21 ft (6.3 m)
Roadway width18 ft (5.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic236 (2022)
Projected traffic263 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed34.2 mi (55 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$390 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Big Hill RD over Colliers Creek built?

It was built in 1928, making it 97 years old in 2025.

What condition is Big Hill RD 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 RD over Colliers Creek carry?

About 236 vehicles per day (2022 count).

How long is Big Hill RD over Colliers Creek?

The structure is 43 ft (13.2 m) long with a longest span of 18 ft (5.6 m) and a deck 21 ft wide.

Who owns Big Hill RD over Colliers Creek?

It is owned by the State Highway Agency.