US Bridges

Timmons Road over Linganore Creek

Fair

Frederick County, Maryland · At Glissans Mill RD Int · Structure no. 200000F-0801010

Built
1974
51 years old, rebuilt 2021
Condition
Fair
inspected November 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
106 ft
2 main spans
Daily traffic
276
2019 count
Owner
County
County Highway Agency

About this bridge

Timmons Road over Linganore Creek is a prestressed concrete box beam or girders - multiple carrying Timmons Road over Linganore Creek in Frederick County, Maryland. It was built in 1974 and reconstructed in 2021, so it is 51 years old, younger 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 276 vehicles a day, roughly 2% of them trucks, projected to reach 410 by 2039. The structure is 106 ft (32.3 m) long and 31 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

No coordinates are recorded for this structure.

CarriesTimmons Road
CrossesLinganore Creek
LocationAt Glissans Mill RD Int
RouteCounty Highway 431
CountyFrederick County
StateMaryland
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
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 protection7 GoodSome minor problems.
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 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 rating110.1 US tons
Inventory rating60 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length106 ft (32.3 m)
Longest span50 ft (15.2 m)
Deck width31 ft (9.3 m)
Roadway width27 ft (8.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic276 (2019)
Projected traffic410 by 2039
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Timmons Road over Linganore Creek built?

It was built in 1974, making it 51 years old in 2025. It was reconstructed in 2021.

What condition is Timmons Road over 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 November 2023.

How much traffic does Timmons Road over Linganore Creek carry?

About 276 vehicles per day (2019 count), of which roughly 2% are trucks.

How long is Timmons Road over Linganore Creek?

The structure is 106 ft (32.3 m) long with a longest span of 50 ft (15.2 m) and a deck 31 ft wide.

Who owns Timmons Road over Linganore Creek?

It is owned by the County Highway Agency.