US Bridges

N Frederick Pk-Nbl over Isaac Creek

Fair

Frederick County, Virginia · 0.02 to 705 - 1.55 to 693 · Structure no. 000000000008153

Built
1974
51 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
167 ft
3 main spans
Daily traffic
7,641
2022 count
Owner
State
State Highway Agency

About this bridge

N Frederick Pk-Nbl over Isaac Creek is a steel stringer/multi-beam or girder carrying N Frederick Pk-Nbl over Isaac Creek in Frederick County, Virginia. It was built in 1974, so it is 51 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 7,641 vehicles a day, roughly 1% of them trucks, projected to reach 11,156 by 2042. The structure is 167 ft (50.9 m) long and 42 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesN Frederick Pk-Nbl
CrossesIsaac Creek
Location0.02 to 705 - 1.55 to 693
RouteU.S. Route 522
Coordinates39.30162, -78.27937
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 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 geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating66 US tons
Inventory rating51 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length167 ft (50.9 m)
Longest span62 ft (18.9 m)
Deck width42 ft (12.8 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,641 (2022)
Projected traffic11,156 by 2042
Trucks1%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 N Frederick Pk-Nbl over Isaac Creek built?

It was built in 1974, making it 51 years old in 2025.

What condition is N Frederick Pk-Nbl over Isaac 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 August 2024.

How much traffic does N Frederick Pk-Nbl over Isaac Creek carry?

About 7,641 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is N Frederick Pk-Nbl over Isaac Creek?

The structure is 167 ft (50.9 m) long with a longest span of 62 ft (18.9 m) and a deck 42 ft wide.

Who owns N Frederick Pk-Nbl over Isaac Creek?

It is owned by the State Highway Agency.