US Bridges

Md 396 over Little Falls Branch

Fair

Montgomery County, Maryland · 0.69 Mile West of Wash DC · Structure no. 100000150057010

Built
1931
94 years old, rebuilt 1973
Condition
Fair
inspected August 2023
Type
Slab
Prestressed Concrete
Length
30 ft
1 main span
Daily traffic
15,581
2009 count
Owner
State
State Highway Agency

About this bridge

Md 396 over Little Falls Branch is a prestressed concrete slab carrying Md 396 over Little Falls Branch in Montgomery County, Maryland. It was built in 1931 and reconstructed in 1973, so it is 94 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 15,581 vehicles a day, roughly 8% of them trucks, projected to reach 19,487 by 2026. The structure is 30 ft (9.1 m) long and 106 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesMd 396
CrossesLittle Falls Branch
Location0.69 Mile West of Wash DC
RouteState Highway 396
Coordinates38.95762, -77.10827
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.5 US tons
Inventory rating29 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length30 ft (9.1 m)
Longest span28 ft (8.5 m)
Deck width106 ft (32.4 m)
Roadway width93 ft (28.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,581 (2009)
Projected traffic19,487 by 2026
Trucks8%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.1 mi (5 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 396 over Little Falls Branch built?

It was built in 1931, making it 94 years old in 2025. It was reconstructed in 1973.

What condition is Md 396 over Little Falls Branch 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 August 2023.

How much traffic does Md 396 over Little Falls Branch carry?

About 15,581 vehicles per day (2009 count), of which roughly 8% are trucks.

How long is Md 396 over Little Falls Branch?

The structure is 30 ft (9.1 m) long with a longest span of 28 ft (8.5 m) and a deck 106 ft wide.

Who owns Md 396 over Little Falls Branch?

It is owned by the State Highway Agency.