US Bridges

Zells Mill RD./604 over Clover Branch

Fair

Giles County, Virginia · 0.80-RTE.603;0.00-RTE.601 · Structure no. 000000000008395

Built
1932
93 years old
Condition
Fair
inspected July 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
25 ft
1 main span
Daily traffic
183
2022 count
Owner
State
State Highway Agency

About this bridge

Zells Mill RD./604 over Clover Branch is a prestressed concrete box beam or girders - multiple carrying Zells Mill RD./604 over Clover Branch in Giles 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 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 183 vehicles a day, roughly 2% of them trucks, projected to reach 204 by 2042. The structure is 25 ft (7.6 m) long and 20 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesZells Mill RD./604
CrossesClover Branch
Location0.80-RTE.603;0.00-RTE.601
RouteCounty Highway 604
Coordinates37.30911, -80.49931
Functional classRural Major 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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
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 inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 rating72 US tons
Inventory rating56 US tons

Structure

MaterialPrestressed Concrete
DeckNot applicable
Main spans1
Design loadHL 93
Structure length25 ft (7.6 m)
Longest span25 ft (7.6 m)
Deck width20 ft (6.1 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic183 (2022)
Projected traffic204 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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$107.6 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Zells Mill RD./604 over Clover Branch built?

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

What condition is Zells Mill RD./604 over Clover Branch 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 July 2024.

How much traffic does Zells Mill RD./604 over Clover Branch carry?

About 183 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is Zells Mill RD./604 over Clover Branch?

The structure is 25 ft (7.6 m) long with a longest span of 25 ft (7.6 m) and a deck 20 ft wide.

Who owns Zells Mill RD./604 over Clover Branch?

It is owned by the State Highway Agency.