US Bridges

Robbie Road over Mill Swamp

Good

Suffolk city, Virginia · 0.01 to Nc / 0.08 to 668 · Structure no. 000000000030571

Built
2015
10 years old
Condition
Good
inspected June 2023
Type
Frame
Concrete
Length
44 ft
2 main spans
Daily traffic
99
2002 count
Owner
City
City or Municipal Highway Agency

About this bridge

Robbie Road over Mill Swamp is a concrete frame carrying Robbie Road over Mill Swamp in Suffolk city, Virginia. It was built in 2015, so it is 10 years old, younger 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 99 vehicles a day, roughly 1% of them trucks, projected to reach 184 by 2045. The structure is 44 ft (13.3 m) long and 28 ft wide. If it were closed, the detour would be 5.6 mi (9 km).

Location

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CarriesRobbie Road
CrossesMill Swamp
Location0.01 to Nc / 0.08 to 668
RouteCity Street 669
CountySuffolk city
StateVirginia
Coordinates36.55101, -76.78145
Functional classUrban Local

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating85.3 US tons
Inventory rating65.9 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length44 ft (13.3 m)
Longest span15 ft (4.6 m)
Deck width28 ft (8.5 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic99 (2002)
Projected traffic184 by 2045
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5.6 mi (9 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Robbie Road over Mill Swamp built?

It was built in 2015, making it 10 years old in 2025.

What condition is Robbie Road over 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 June 2023.

How much traffic does Robbie Road over Mill Swamp carry?

About 99 vehicles per day (2002 count), of which roughly 1% are trucks.

How long is Robbie Road over Mill Swamp?

The structure is 44 ft (13.3 m) long with a longest span of 15 ft (4.6 m) and a deck 28 ft wide.

Who owns Robbie Road over Mill Swamp?

It is owned by the City or Municipal Highway Agency.