US Bridges

Unionville Road over Trib. of Linganore Creek

Fair

Frederick County, Maryland · At Woodville RD Int · Structure no. 200000F-1904010

Built
1929
96 years old, rebuilt 2003
Condition
Fair
inspected August 2023
Type
Slab
Concrete
Length
49 ft
2 main spans
Daily traffic
1,309
2023 count
Owner
County
County Highway Agency

About this bridge

Unionville Road over Trib. of Linganore Creek is a concrete slab carrying Unionville Road over Trib. of Linganore Creek in Frederick County, Maryland. It was built in 1929 and reconstructed in 2003, so it is 96 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 1,309 vehicles a day, roughly 10% of them trucks, projected to reach 2,644 by 2045. The structure is 49 ft (14.9 m) long and 31 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesUnionville Road
CrossesTrib. of Linganore Creek
LocationAt Woodville RD Int
RouteCounty Highway 440
CountyFrederick County
StateMaryland
Coordinates39.47547, -77.18681
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75.9 US tons
Inventory rating45.5 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length49 ft (14.9 m)
Longest span20 ft (6.1 m)
Deck width31 ft (9.4 m)
Roadway width27 ft (8.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,309 (2023)
Projected traffic2,644 by 2045
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 Unionville Road over Trib. of Linganore Creek built?

It was built in 1929, making it 96 years old in 2025. It was reconstructed in 2003.

What condition is Unionville Road over Trib. of Linganore 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 2023.

How much traffic does Unionville Road over Trib. of Linganore Creek carry?

About 1,309 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Unionville Road over Trib. of Linganore Creek?

The structure is 49 ft (14.9 m) long with a longest span of 20 ft (6.1 m) and a deck 31 ft wide.

Who owns Unionville Road over Trib. of Linganore Creek?

It is owned by the County Highway Agency.