US Bridges

US 15 Sbr over Md 15C

Good

Frederick County, Maryland · 0.77 Mile South of Md 77 · Structure no. 100000100181012

Built
1985
40 years old
Condition
Good
inspected February 2024
Type
Girder and Floorbeam System
Steel
Length
114 ft
1 main span
Daily traffic
30,800
2009 count
Owner
State
State Highway Agency

About this bridge

US 15 Sbr over Md 15C is a steel girder and floorbeam system carrying US 15 Sbr over Md 15C in Frederick County, Maryland. It was built in 1985, so it is 40 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 30,800 vehicles a day, roughly 8% of them trucks, projected to reach 42,980 by 2029. The structure is 114 ft (34.7 m) long and 43 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesUS 15 Sbr
CrossesMd 15C
Location0.77 Mile South of Md 77
RouteU.S. Route 15
Coordinates39.61483, -77.42012
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating66.5 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length114 ft (34.7 m)
Longest span109 ft (33.2 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30,800 (2009)
Projected traffic42,980 by 2029
Trucks8%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed5 mi (8 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 15 Sbr over Md 15C built?

It was built in 1985, making it 40 years old in 2025.

What condition is US 15 Sbr over Md 15C 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 February 2024.

How much traffic does US 15 Sbr over Md 15C carry?

About 30,800 vehicles per day (2009 count), of which roughly 8% are trucks.

How long is US 15 Sbr over Md 15C?

The structure is 114 ft (34.7 m) long with a longest span of 109 ft (33.2 m) and a deck 43 ft wide.

Who owns US 15 Sbr over Md 15C?

It is owned by the State Highway Agency.