US Bridges

Poplar Hill Road over Zekiah Swamp Run

PoorPosted for load

Charles County, Maryland · 2.5 MI E of Md 5 · Structure no. 200000CH0040010

Built
1969
56 years old
Condition
Poor
inspected September 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
45 ft
2 main spans
Daily traffic
4,644
2023 count
Owner
County
County Highway Agency

About this bridge

Poplar Hill Road over Zekiah Swamp Run is a wood or timber stringer/multi-beam or girder carrying Poplar Hill Road over Zekiah Swamp Run in Charles County, Maryland. It was built in 1969, so it is 56 years old, older than the Maryland average of 52.6 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 4,644 vehicles a day, roughly 8% of them trucks, projected to reach 5,109 by 2043. The structure is 45 ft (13.6 m) long and 31 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

CarriesPoplar Hill Road
CrossesZekiah Swamp Run
Location2.5 MI E of Md 5
RouteState Highway 1120
Coordinates38.61456, -76.83262
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

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.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating20.5 US tons
Inventory rating12.5 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans2
Design loadHS 20
Structure length45 ft (13.6 m)
Longest span22 ft (6.7 m)
Deck width31 ft (9.4 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,644 (2023)
Projected traffic5,109 by 2043
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$9,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Poplar Hill Road over Zekiah Swamp Run built?

It was built in 1969, making it 56 years old in 2025.

What condition is Poplar Hill Road over Zekiah Swamp Run in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in September 2024.

How much traffic does Poplar Hill Road over Zekiah Swamp Run carry?

About 4,644 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is Poplar Hill Road over Zekiah Swamp Run?

The structure is 45 ft (13.6 m) long with a longest span of 22 ft (6.7 m) and a deck 31 ft wide.

Who owns Poplar Hill Road over Zekiah Swamp Run?

It is owned by the County Highway Agency.