US Bridges

White Ground Road over Seneca Creek Tributary

Fair

Montgomery County, Maryland · 0.4 Miles North of Md 28 · Structure no. 200000M-0299010

Built
1925
100 years old
Condition
Fair
inspected November 2023
Type
Slab
Concrete
Length
29 ft
1 main span
Daily traffic
615
2023 count
Owner
County
County Highway Agency

About this bridge

White Ground Road over Seneca Creek Tributary is a concrete slab carrying White Ground Road over Seneca Creek Tributary in Montgomery County, Maryland. It was built in 1925, 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 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 615 vehicles a day, roughly 3% of them trucks, projected to reach 813 by 2043. The structure is 29 ft (8.8 m) long and 3 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesWhite Ground Road
CrossesSeneca Creek Tributary
Location0.4 Miles North of Md 28
RouteCounty Highway 259
CountyMontgomery County
StateMaryland
Coordinates39.13619, -77.34539
Functional classRural Minor Collector

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating36 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length29 ft (8.8 m)
Longest span5 ft (1.5 m)
Deck width3 ft (0.8 m)
Roadway width2 ft (0.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic615 (2023)
Projected traffic813 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 White Ground Road over Seneca Creek Tributary built?

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

What condition is White Ground Road over Seneca Creek Tributary 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 November 2023.

How much traffic does White Ground Road over Seneca Creek Tributary carry?

About 615 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is White Ground Road over Seneca Creek Tributary?

The structure is 29 ft (8.8 m) long with a longest span of 5 ft (1.5 m) and a deck 3 ft wide.

Who owns White Ground Road over Seneca Creek Tributary?

It is owned by the County Highway Agency.