US Bridges

Hirst Brault Exp. over Chain Bridge Rd. RTE3547

Fair

Fairfax County, Virginia · 02.12FR66/00.22TO123 · Structure no. 000000000006501

Built
1983
42 years old
Condition
Fair
inspected March 2024
Type
Slab
Concrete Continuous
Length
107 ft
3 main spans
Daily traffic
13,962
2022 count
Owner
State
State Highway Agency

About this bridge

Hirst Brault Exp. over Chain Bridge Rd. RTE3547 is a concrete continuous slab carrying Hirst Brault Exp. over Chain Bridge Rd. RTE3547 in Fairfax County, Virginia. It was built in 1983, so it is 42 years old, younger 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 13,962 vehicles a day, projected to reach 15,568 by 2042. The structure is 107 ft (32.6 m) long and 97 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesHirst Brault Exp.
CrossesChain Bridge Rd. RTE3547
Location02.12FR66/00.22TO123
RouteState Highway 267
CountyFairfax County
StateVirginia
Coordinates38.9275, -77.19971
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48 US tons
Inventory rating37 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length107 ft (32.6 m)
Longest span63 ft (19.2 m)
Deck width97 ft (29.6 m)
Roadway width80 ft (24.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,962 (2022)
Projected traffic15,568 by 2042
Trucks0%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$109 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Hirst Brault Exp. over Chain Bridge Rd. RTE3547 built?

It was built in 1983, making it 42 years old in 2025.

What condition is Hirst Brault Exp. over Chain Bridge Rd. RTE3547 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 March 2024.

How much traffic does Hirst Brault Exp. over Chain Bridge Rd. RTE3547 carry?

About 13,962 vehicles per day (2022 count).

How long is Hirst Brault Exp. over Chain Bridge Rd. RTE3547?

The structure is 107 ft (32.6 m) long with a longest span of 63 ft (19.2 m) and a deck 97 ft wide.

Who owns Hirst Brault Exp. over Chain Bridge Rd. RTE3547?

It is owned by the State Highway Agency.