US Bridges

Md 180 over US 340

Fair

Frederick County, Maryland · 0.13 Mile West of Md 872 · Structure no. 100000100118010

Built
1964
61 years old
Condition
Fair
inspected January 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
292 ft
2 main spans
Daily traffic
4,460
2009 count
Owner
State
State Highway Agency

About this bridge

Md 180 over US 340 is a steel stringer/multi-beam or girder carrying Md 180 over US 340 in Frederick County, Maryland. It was built in 1964, so it is 61 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 5 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 4,460 vehicles a day, roughly 8% of them trucks, projected to reach 5,327 by 2026. The structure is 292 ft (89 m) long and 35 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesMd 180
CrossesUS 340
Location0.13 Mile West of Md 872
RouteState Highway 180
CountyFrederick County
StateMaryland
Coordinates39.35578, -77.58316
Functional classRural Minor Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating63.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 20
Structure length292 ft (89 m)
Longest span98 ft (29.9 m)
Deck width35 ft (10.7 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,460 (2009)
Projected traffic5,327 by 2026
Trucks8%
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 Md 180 over US 340 built?

It was built in 1964, making it 61 years old in 2025.

What condition is Md 180 over US 340 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 Md 180 over US 340 carry?

About 4,460 vehicles per day (2009 count), of which roughly 8% are trucks.

How long is Md 180 over US 340?

The structure is 292 ft (89 m) long with a longest span of 98 ft (29.9 m) and a deck 35 ft wide.

Who owns Md 180 over US 340?

It is owned by the State Highway Agency.