US Bridges

Garrison Road over Burnt Mill Swamp

Good

Isle of Wight County, Virginia · 1.15 Mi.Fr.Int.Rte. 645 · Structure no. 000000000010427

Built
1945
80 years old, rebuilt 2024
Condition
Good
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
41 ft
1 main span
Daily traffic
352
2017 count
Owner
State
State Highway Agency

About this bridge

Garrison Road over Burnt Mill Swamp is a steel stringer/multi-beam or girder carrying Garrison Road over Burnt Mill Swamp in Isle of Wight County, Virginia. It was built in 1945 and reconstructed in 2024, so it is 80 years old, older than the Virginia average of 50.7 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 352 vehicles a day, projected to reach 464 by 2045. The structure is 41 ft (12.6 m) long and 21 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesGarrison Road
CrossesBurnt Mill Swamp
Location1.15 Mi.Fr.Int.Rte. 645
RouteCounty Highway 646
CountyIsle of Wight County
StateVirginia
Coordinates36.8522, -76.77685
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating69.9 US tons
Inventory rating53.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length41 ft (12.6 m)
Longest span39 ft (12 m)
Deck width21 ft (6.4 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic352 (2017)
Projected traffic464 by 2045
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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$81 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Garrison Road over Burnt Mill Swamp built?

It was built in 1945, making it 80 years old in 2025. It was reconstructed in 2024.

What condition is Garrison Road over Burnt Mill Swamp in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2024.

How much traffic does Garrison Road over Burnt Mill Swamp carry?

About 352 vehicles per day (2017 count).

How long is Garrison Road over Burnt Mill Swamp?

The structure is 41 ft (12.6 m) long with a longest span of 39 ft (12 m) and a deck 21 ft wide.

Who owns Garrison Road over Burnt Mill Swamp?

It is owned by the State Highway Agency.