US Bridges

Gilliams Rd. over Swamp

Fair

Northumberland County, Virginia · 1.2M RTE601-0.7M RTE201 · Structure no. 000000000012780

Built
1961
64 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
32 ft
1 main span
Daily traffic
5
2020 count
Owner
State
State Highway Agency

About this bridge

Gilliams Rd. over Swamp is a steel stringer/multi-beam or girder carrying Gilliams Rd. over Swamp in Northumberland County, Virginia. It was built in 1961, so it is 64 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 5 vehicles a day, projected to reach 8 by 2045. The structure is 32 ft (9.8 m) long and 12 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesGilliams Rd.
CrossesSwamp
Location1.2M RTE601-0.7M RTE201
RouteCounty Highway 611
CountyNorthumberland County
StateVirginia
Coordinates37.86637, -76.48295
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70.5 US tons
Inventory rating54.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans1
Design loadHS 20 + Mod
Structure length32 ft (9.8 m)
Longest span32 ft (9.8 m)
Deck width12 ft (3.7 m)
Roadway width11 ft (3.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5 (2020)
Projected traffic8 by 2045
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$8 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Gilliams Rd. over Swamp built?

It was built in 1961, making it 64 years old in 2025.

What condition is Gilliams Rd. over Swamp 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 May 2024.

How much traffic does Gilliams Rd. over Swamp carry?

About 5 vehicles per day (2020 count).

How long is Gilliams Rd. over Swamp?

The structure is 32 ft (9.8 m) long with a longest span of 32 ft (9.8 m) and a deck 12 ft wide.

Who owns Gilliams Rd. over Swamp?

It is owned by the State Highway Agency.