US Bridges

Md 410 over CSXT WMATA

Fair

Montgomery County, Maryland · 0.09 Mile East of US 29 · Structure no. 100000150061010

Built
1975
50 years old
Condition
Fair
inspected September 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
100 ft
2 main spans
Daily traffic
11,472
2023 count
Owner
State
State Highway Agency

About this bridge

Md 410 over CSXT WMATA is a prestressed concrete box beam or girders - multiple carrying Md 410 over CSXT WMATA in Montgomery County, Maryland. It was built in 1975, so it is 50 years old, younger 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 11,472 vehicles a day, roughly 8% of them trucks, projected to reach 14,500 by 2045. The structure is 100 ft (30.5 m) long and 61 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesMd 410
CrossesCSXT WMATA
Location0.09 Mile East of US 29
RouteState Highway 410
CountyMontgomery County
StateMaryland
Coordinates38.98749, -77.02526
Functional classUrban Minor 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.5 US tons
Inventory rating38 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length100 ft (30.5 m)
Longest span65 ft (19.8 m)
Deck width61 ft (18.7 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,472 (2023)
Projected traffic14,500 by 2045
Trucks8%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed1.9 mi (3 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 410 over CSXT WMATA built?

It was built in 1975, making it 50 years old in 2025.

What condition is Md 410 over CSXT WMATA 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 September 2024.

How much traffic does Md 410 over CSXT WMATA carry?

About 11,472 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is Md 410 over CSXT WMATA?

The structure is 100 ft (30.5 m) long with a longest span of 65 ft (19.8 m) and a deck 61 ft wide.

Who owns Md 410 over CSXT WMATA?

It is owned by the State Highway Agency.