US Bridges

General Mahone HWY over Warwick Swamp

Fair

Sussex County, Virginia · 4.96 MI FR Wcl of Waverly · Structure no. 000000000018289

Built
1942
83 years old, rebuilt 1982
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
112 ft
3 main spans
Daily traffic
12,182
2022 count
Owner
State
State Highway Agency

About this bridge

General Mahone HWY over Warwick Swamp is a steel stringer/multi-beam or girder carrying General Mahone HWY over Warwick Swamp in Sussex County, Virginia. It was built in 1942 and reconstructed in 1982, so it is 83 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 12,182 vehicles a day, projected to reach 13,583 by 2045. The structure is 112 ft (34.2 m) long and 70 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesGeneral Mahone HWY
CrossesWarwick Swamp
Location4.96 MI FR Wcl of Waverly
RouteU.S. Route 460
CountySussex County
StateVirginia
Coordinates37.08768, -77.16656
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry8: Equal to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.2 US tons
Inventory rating37.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length112 ft (34.2 m)
Longest span37 ft (11.3 m)
Deck width70 ft (21.3 m)
Roadway width67 ft (20.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,182 (2022)
Projected traffic13,583 by 2045
Trucks0%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 General Mahone HWY over Warwick Swamp built?

It was built in 1942, making it 83 years old in 2025. It was reconstructed in 1982.

What condition is General Mahone HWY over Warwick 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 September 2023.

How much traffic does General Mahone HWY over Warwick Swamp carry?

About 12,182 vehicles per day (2022 count).

How long is General Mahone HWY over Warwick Swamp?

The structure is 112 ft (34.2 m) long with a longest span of 37 ft (11.3 m) and a deck 70 ft wide.

Who owns General Mahone HWY over Warwick Swamp?

It is owned by the State Highway Agency.