US Bridges

Md 28 over Br of Dry Seneca Creek

Fair

Montgomery County, Maryland · 0.98 Mile West of Md 117 · Structure no. 100000150066020

Built
1954
71 years old
Condition
Fair
inspected August 2024
Type
Culvert
Concrete
Length
23 ft
Daily traffic
5,420
2009 count
Owner
State
State Highway Agency

About this bridge

Md 28 over Br of Dry Seneca Creek is a concrete culvert carrying Md 28 over Br of Dry Seneca Creek in Montgomery County, Maryland. It was built in 1954, so it is 71 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 5,420 vehicles a day, roughly 8% of them trucks, projected to reach 6,492 by 2026. The structure is 23 ft (7 m) long. If it were closed, the detour would be 5 mi (8 km).

CarriesMd 28
CrossesBr of Dry Seneca Creek
Location0.98 Mile West of Md 117
RouteState Highway 28
Coordinates39.15748, -77.37673
Functional classRural 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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46 US tons
Inventory rating20.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans0
Design loadH 20
Structure length23 ft (7 m)
Longest span20 ft (6.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,420 (2009)
Projected traffic6,492 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Md 28 over Br of Dry Seneca Creek built?

It was built in 1954, making it 71 years old in 2025.

What condition is Md 28 over Br of Dry Seneca Creek 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 2024.

How much traffic does Md 28 over Br of Dry Seneca Creek carry?

About 5,420 vehicles per day (2009 count), of which roughly 8% are trucks.

How long is Md 28 over Br of Dry Seneca Creek?

The structure is 23 ft (7 m) long with a longest span of 20 ft (6.1 m).

Who owns Md 28 over Br of Dry Seneca Creek?

It is owned by the State Highway Agency.