US Bridges

Md 355 over Little Bennett Creek

Good

Montgomery County, Maryland · 0.10 Mile South of Md 109 · Structure no. 100000150053010

Built
1925
100 years old, rebuilt 2020
Condition
Good
inspected March 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
113 ft
2 main spans
Daily traffic
7,540
2009 count
Owner
State
State Highway Agency

About this bridge

Md 355 over Little Bennett Creek is a prestressed concrete box beam or girders - multiple carrying Md 355 over Little Bennett Creek in Montgomery County, Maryland. It was built in 1925 and reconstructed in 2020, so it is 100 years old, older 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 7,540 vehicles a day, roughly 8% of them trucks, projected to reach 9,339 by 2026. The structure is 113 ft (34.3 m) long and 43 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesMd 355
CrossesLittle Bennett Creek
Location0.10 Mile South of Md 109
RouteState Highway 355
CountyMontgomery County
StateMaryland
Coordinates39.2795, -77.31486
Functional classRural Major Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.5 US tons
Inventory rating37.5 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length113 ft (34.3 m)
Longest span56 ft (17.1 m)
Deck width43 ft (13.1 m)
Roadway width39 ft (11.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,540 (2009)
Projected traffic9,339 by 2026
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$77,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Md 355 over Little Bennett Creek built?

It was built in 1925, making it 100 years old in 2025. It was reconstructed in 2020.

What condition is Md 355 over Little Bennett Creek 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 March 2023.

How much traffic does Md 355 over Little Bennett Creek carry?

About 7,540 vehicles per day (2009 count), of which roughly 8% are trucks.

How long is Md 355 over Little Bennett Creek?

The structure is 113 ft (34.3 m) long with a longest span of 56 ft (17.1 m) and a deck 43 ft wide.

Who owns Md 355 over Little Bennett Creek?

It is owned by the State Highway Agency.