US Bridges

Calamo Road over Calamo Branch

Fair

Fairfax County, Virginia · 00.50FR1132/00.21TO1135 · Structure no. 000000000006927

Built
1950
75 years old
Condition
Fair
inspected February 2023
Type
Culvert
Steel
Length
20 ft
3 main spans
Daily traffic
757
2022 count
Owner
State
State Highway Agency

About this bridge

Calamo Road over Calamo Branch is a steel culvert carrying Calamo Road over Calamo Branch in Fairfax County, Virginia. It was built in 1950, so it is 75 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 757 vehicles a day, roughly 1% of them trucks, projected to reach 844 by 2045. The structure is 20 ft (6.1 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesCalamo Road
CrossesCalamo Branch
Location00.50FR1132/00.21TO1135
RouteCounty Highway 1134
CountyFairfax County
StateVirginia
Coordinates38.77332, -77.19035
Functional classUrban 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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionFebruary 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
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating49.1 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans3
Design loadHS 20
Structure length20 ft (6.1 m)
Longest span5 ft (1.5 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic757 (2022)
Projected traffic844 by 2045
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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$100 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Calamo Road over Calamo Branch built?

It was built in 1950, making it 75 years old in 2025.

What condition is Calamo Road over Calamo Branch 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 February 2023.

How much traffic does Calamo Road over Calamo Branch carry?

About 757 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is Calamo Road over Calamo Branch?

The structure is 20 ft (6.1 m) long with a longest span of 5 ft (1.5 m).

Who owns Calamo Road over Calamo Branch?

It is owned by the State Highway Agency.