US Bridges

Samaga Drive over Tributary of Rocky Br.

Good

Fairfax County, Virginia · 00.20FR.6474/00.20TO4385 · Structure no. 000000000006994

Built
1984
41 years old
Condition
Good
inspected June 2024
Type
Culvert
Concrete
Length
27 ft
3 main spans
Daily traffic
141
2015 count
Owner
State
State Highway Agency

About this bridge

Samaga Drive over Tributary of Rocky Br. is a concrete culvert carrying Samaga Drive over Tributary of Rocky Br. in Fairfax County, Virginia. It was built in 1984, so it is 41 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 141 vehicles a day, projected to reach 162 by 2042. The structure is 27 ft (8.2 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesSamaga Drive
CrossesTributary of Rocky Br.
Location00.20FR.6474/00.20TO4385
RouteCounty Highway 4382
CountyFairfax County
StateVirginia
Coordinates38.89647, -77.31571
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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating99 US tons
Inventory rating85 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length27 ft (8.2 m)
Longest span9 ft (2.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic141 (2015)
Projected traffic162 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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$2.5 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Samaga Drive over Tributary of Rocky Br. built?

It was built in 1984, making it 41 years old in 2025.

What condition is Samaga Drive over Tributary of Rocky Br. 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 2024.

How much traffic does Samaga Drive over Tributary of Rocky Br. carry?

About 141 vehicles per day (2015 count).

How long is Samaga Drive over Tributary of Rocky Br.?

The structure is 27 ft (8.2 m) long with a longest span of 9 ft (2.7 m).

Who owns Samaga Drive over Tributary of Rocky Br.?

It is owned by the State Highway Agency.