US Bridges

US 15 over Maryland Midland RR

Fair

Frederick County, Maryland · 0.26 Mile South of Md 550 · Structure no. 100000100108040

Built
1957
68 years old, rebuilt 1982
Condition
Fair
inspected January 2024
Type
Frame
Concrete
Length
42 ft
1 main span
Daily traffic
28,321
2013 count
Owner
State
State Highway Agency

About this bridge

US 15 over Maryland Midland RR is a concrete frame carrying US 15 over Maryland Midland RR in Frederick County, Maryland. It was built in 1957 and reconstructed in 1982, 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 28,321 vehicles a day, roughly 8% of them trucks, projected to reach 46,450 by 2029. The structure is 42 ft (12.8 m) long and 96 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesUS 15
CrossesMaryland Midland RR
Location0.26 Mile South of Md 550
RouteU.S. Route 15
CountyFrederick County
StateMaryland
Coordinates39.63248, -77.41434
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating76.9 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length42 ft (12.8 m)
Longest span38 ft (11.6 m)
Deck width96 ft (29.4 m)
Roadway width90 ft (27.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic28,321 (2013)
Projected traffic46,450 by 2029
Trucks8%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 15 over Maryland Midland RR built?

It was built in 1957, making it 68 years old in 2025. It was reconstructed in 1982.

What condition is US 15 over Maryland Midland RR 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 January 2024.

How much traffic does US 15 over Maryland Midland RR carry?

About 28,321 vehicles per day (2013 count), of which roughly 8% are trucks.

How long is US 15 over Maryland Midland RR?

The structure is 42 ft (12.8 m) long with a longest span of 38 ft (11.6 m) and a deck 96 ft wide.

Who owns US 15 over Maryland Midland RR?

It is owned by the State Highway Agency.