US Bridges

Parking Lot Road over Blue Blazes Creek

Good

Frederick County, Maryland · US-15N West on MC-77 to · Structure no. 3220002P0000000

Built
2019
6 years old
Condition
Good
inspected January 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
34 ft
1 main span
Daily traffic
20
2019 count
Owner
Federal
National Park Service

About this bridge

Parking Lot Road over Blue Blazes Creek is a prestressed concrete continuous box beam or girders - single or spread carrying Parking Lot Road over Blue Blazes Creek in Frederick County, Maryland. It was built in 2019, so it is 6 years old, younger than the Maryland average of 52.6 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 20 vehicles a day, projected to reach 24 by 2039. The structure is 34 ft (10.4 m) long and 24 ft wide.

Location

Open in Google Maps
CarriesParking Lot Road
CrossesBlue Blazes Creek
LocationUS-15N West on MC-77 to
RouteFederal Lands Road 0
CountyFrederick County
StateMaryland
Coordinates39.63418, -77.45068
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72 US tons
Inventory rating56 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans1
Design loadGreater than HL 93
Structure length34 ft (10.4 m)
Longest span30 ft (9.1 m)
Deck width24 ft (7.4 m)
Roadway width17 ft (5.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2019)
Projected traffic24 by 2039
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerNational Park Service
Maintained byNational Park Service
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 Parking Lot Road over Blue Blazes Creek built?

It was built in 2019, making it 6 years old in 2025.

What condition is Parking Lot Road over Blue Blazes Creek 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 January 2024.

How much traffic does Parking Lot Road over Blue Blazes Creek carry?

About 20 vehicles per day (2019 count).

How long is Parking Lot Road over Blue Blazes Creek?

The structure is 34 ft (10.4 m) long with a longest span of 30 ft (9.1 m) and a deck 24 ft wide.

Who owns Parking Lot Road over Blue Blazes Creek?

It is owned by the National Park Service.