US Bridges

Elmer Derr Road over US 15

Fair

Frederick County, Maryland · 0.7 MI W of US 340 · Structure no. 100000100139010

Built
1969
56 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
226 ft
2 main spans
Daily traffic
999
1994 count
Owner
State
State Highway Agency

About this bridge

Elmer Derr Road over US 15 is a steel continuous stringer/multi-beam or girder carrying Elmer Derr Road over US 15 in Frederick County, Maryland. It was built in 1969, so it is 56 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 999 vehicles a day, roughly 5% of them trucks, projected to reach 295 by 2012. The structure is 226 ft (68.9 m) long and 32 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesElmer Derr Road
CrossesUS 15
Location0.7 MI W of US 340
RouteCounty Highway 292
CountyFrederick County
StateMaryland
Coordinates39.35715, -77.50503
Functional classRural Local

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.
Substructure7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating61 US tons
Inventory rating36.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length226 ft (68.9 m)
Longest span111 ft (33.8 m)
Deck width32 ft (9.8 m)
Roadway width29 ft (8.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic999 (1994)
Projected traffic295 by 2012
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

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 Elmer Derr Road over US 15 built?

It was built in 1969, making it 56 years old in 2025.

What condition is Elmer Derr Road over US 15 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 May 2024.

How much traffic does Elmer Derr Road over US 15 carry?

About 999 vehicles per day (1994 count), of which roughly 5% are trucks.

How long is Elmer Derr Road over US 15?

The structure is 226 ft (68.9 m) long with a longest span of 111 ft (33.8 m) and a deck 32 ft wide.

Who owns Elmer Derr Road over US 15?

It is owned by the State Highway Agency.