US Bridges

Hoffman Mill Road over Aspen Run

Fair

Carroll County, Maryland · .3 MI E of Coon Club Road · Structure no. 200000CL0374030

Built
1999
26 years old
Condition
Fair
inspected June 2023
Type
Culvert
Concrete
Length
31 ft
Daily traffic
419
2021 count
Owner
County
County Highway Agency

About this bridge

Hoffman Mill Road over Aspen Run is a concrete culvert carrying Hoffman Mill Road over Aspen Run in Carroll County, Maryland. It was built in 1999, so it is 26 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 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 419 vehicles a day, roughly 8% of them trucks, projected to reach 690 by 2041. The structure is 31 ft (9.3 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesHoffman Mill Road
CrossesAspen Run
Location.3 MI E of Coon Club Road
RouteCounty Highway 447
CountyCarroll County
StateMaryland
Coordinates39.865, -76.90065
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans0
Design loadHS 25 or greater
Structure length31 ft (9.3 m)
Longest span6 ft (1.8 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic419 (2021)
Projected traffic690 by 2041
Trucks8%
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 Hoffman Mill Road over Aspen Run built?

It was built in 1999, making it 26 years old in 2025.

What condition is Hoffman Mill Road over Aspen Run 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 June 2023.

How much traffic does Hoffman Mill Road over Aspen Run carry?

About 419 vehicles per day (2021 count), of which roughly 8% are trucks.

How long is Hoffman Mill Road over Aspen Run?

The structure is 31 ft (9.3 m) long with a longest span of 6 ft (1.8 m).

Who owns Hoffman Mill Road over Aspen Run?

It is owned by the County Highway Agency.