US Bridges

Md 185 over CSX Trans.

Fair

Montgomery County, Maryland · 0.10 Mile North of Md 547 · Structure no. 100000150031010

Built
1957
68 years old, rebuilt 1992
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
116 ft
3 main spans
Daily traffic
42,252
2009 count
Owner
State
State Highway Agency

About this bridge

Md 185 over CSX Trans. is a steel continuous stringer/multi-beam or girder carrying Md 185 over CSX Trans. in Montgomery County, Maryland. It was built in 1957 and reconstructed in 1992, 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 42,252 vehicles a day, roughly 4% of them trucks, projected to reach 48,002 by 2026. The structure is 116 ft (35.4 m) long and 103 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesMd 185
CrossesCSX Trans.
Location0.10 Mile North of Md 547
RouteState Highway 185
CountyMontgomery County
StateMaryland
Coordinates39.02873, -77.07614
Functional classUrban Other Principal Arterial

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 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 rating84 US tons
Inventory rating50.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length116 ft (35.4 m)
Longest span37 ft (11.3 m)
Deck width103 ft (31.3 m)
Roadway width86 ft (26.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic42,252 (2009)
Projected traffic48,002 by 2026
Trucks4%
Lanes on structure7
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed1.9 mi (3 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 Md 185 over CSX Trans. built?

It was built in 1957, making it 68 years old in 2025. It was reconstructed in 1992.

What condition is Md 185 over CSX Trans. 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 October 2024.

How much traffic does Md 185 over CSX Trans. carry?

About 42,252 vehicles per day (2009 count), of which roughly 4% are trucks.

How long is Md 185 over CSX Trans.?

The structure is 116 ft (35.4 m) long with a longest span of 37 ft (11.3 m) and a deck 103 ft wide.

Who owns Md 185 over CSX Trans.?

It is owned by the State Highway Agency.