US Bridges

Md 140 over Flat Run

Good

Frederick County, Maryland · 0.4 MI E of Emmitsburg · Structure no. 100000100062010

Built
2019
6 years old
Condition
Good
inspected February 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
86 ft
1 main span
Daily traffic
9,011
2016 count
Owner
State
State Highway Agency

About this bridge

Md 140 over Flat Run is a prestressed concrete stringer/multi-beam or girder carrying Md 140 over Flat Run in Frederick County, Maryland. It was built in 2019, so it is 6 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 9,011 vehicles a day, roughly 11% of them trucks, projected to reach 12,200 by 2031. The structure is 86 ft (26.3 m) long and 49 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesMd 140
CrossesFlat Run
Location0.4 MI E of Emmitsburg
RouteState Highway 140
Coordinates39.70292, -77.31922
Functional classRural Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67.9 US tons
Inventory rating51.8 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length86 ft (26.3 m)
Longest span80 ft (24.4 m)
Deck width49 ft (14.8 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,011 (2016)
Projected traffic12,200 by 2031
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Md 140 over Flat Run built?

It was built in 2019, making it 6 years old in 2025.

What condition is Md 140 over Flat Run 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 Md 140 over Flat Run carry?

About 9,011 vehicles per day (2016 count), of which roughly 11% are trucks.

How long is Md 140 over Flat Run?

The structure is 86 ft (26.3 m) long with a longest span of 80 ft (24.4 m) and a deck 49 ft wide.

Who owns Md 140 over Flat Run?

It is owned by the State Highway Agency.