US Bridges

Northwestern Pk over Isaacs Creek

Fair

Frederick County, Virginia · 0.65 to 733 - 0.79 to 610 · Structure no. 000000000008100

Built
1986
39 years old
Condition
Fair
inspected May 2024
Type
Slab
Concrete
Length
52 ft
2 main spans
Daily traffic
8,470
2022 count
Owner
State
State Highway Agency

About this bridge

Northwestern Pk over Isaacs Creek is a concrete slab carrying Northwestern Pk over Isaacs Creek in Frederick County, Virginia. It was built in 1986, so it is 39 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 8,470 vehicles a day, projected to reach 10,154 by 2042. The structure is 52 ft (15.8 m) long and 40 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesNorthwestern Pk
CrossesIsaacs Creek
Location0.65 to 733 - 0.79 to 610
RouteU.S. Route 50
CountyFrederick County
StateVirginia
Coordinates39.28019, -78.3739
Functional classRural Principal Arterial - Other

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating99 US tons
Inventory rating98 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckOther
Main spans2
Design loadHS 20 + Mod
Structure length52 ft (15.8 m)
Longest span26 ft (7.9 m)
Deck width40 ft (12.3 m)
Roadway width37 ft (11.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,470 (2022)
Projected traffic10,154 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 SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Northwestern Pk over Isaacs Creek built?

It was built in 1986, making it 39 years old in 2025.

What condition is Northwestern Pk over Isaacs Creek 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 May 2024.

How much traffic does Northwestern Pk over Isaacs Creek carry?

About 8,470 vehicles per day (2022 count).

How long is Northwestern Pk over Isaacs Creek?

The structure is 52 ft (15.8 m) long with a longest span of 26 ft (7.9 m) and a deck 40 ft wide.

Who owns Northwestern Pk over Isaacs Creek?

It is owned by the State Highway Agency.