US Bridges

US 15 Nbr over Md 77 Hunting Creek

Fair

Frederick County, Maryland · 0.46 Mile South of Md 15D · Structure no. 100000100109010

Built
1957
68 years old, rebuilt 2023
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
270 ft
5 main spans
Daily traffic
30,410
2009 count
Owner
State
State Highway Agency

About this bridge

US 15 Nbr over Md 77 Hunting Creek is a steel stringer/multi-beam or girder carrying US 15 Nbr over Md 77 Hunting Creek in Frederick County, Maryland. It was built in 1957 and reconstructed in 2023, so it is 68 years old, older than the Maryland average of 52.6 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 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 30,410 vehicles a day, roughly 8% of them trucks, projected to reach 46,450 by 2029. The structure is 270 ft (82.3 m) long and 45 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesUS 15 Nbr
CrossesMd 77 Hunting Creek
Location0.46 Mile South of Md 15D
RouteU.S. Route 15
CountyFrederick County
StateMaryland
Coordinates39.62456, -77.41809
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67.1 US tons
Inventory rating51.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans5
Design loadUnknown
Structure length270 ft (82.3 m)
Longest span62 ft (18.9 m)
Deck width45 ft (13.7 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30,410 (2009)
Projected traffic46,450 by 2029
Trucks8%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and waterway
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$802,000
NavigationNo navigation control on waterway

Frequently asked questions

When was US 15 Nbr over Md 77 Hunting Creek built?

It was built in 1957, making it 68 years old in 2025. It was reconstructed in 2023.

What condition is US 15 Nbr over Md 77 Hunting 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 July 2024.

How much traffic does US 15 Nbr over Md 77 Hunting Creek carry?

About 30,410 vehicles per day (2009 count), of which roughly 8% are trucks.

How long is US 15 Nbr over Md 77 Hunting Creek?

The structure is 270 ft (82.3 m) long with a longest span of 62 ft (18.9 m) and a deck 45 ft wide.

Who owns US 15 Nbr over Md 77 Hunting Creek?

It is owned by the State Highway Agency.