US Bridges

Athol Avenue over Unnamed Stream

Fair

Howard County, Maryland · 0.3 MI E of Loudon Ave · Structure no. 200000HO0061010

Built
1945
80 years old, rebuilt 1983
Condition
Fair
inspected April 2023
Type
Slab
Concrete
Length
28 ft
1 main span
Daily traffic
680
1995 count
Owner
County
County Highway Agency

About this bridge

Athol Avenue over Unnamed Stream is a concrete slab carrying Athol Avenue over Unnamed Stream in Howard County, Maryland. It was built in 1945 and reconstructed in 1983, so it is 80 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 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 680 vehicles a day, roughly 4% of them trucks, projected to reach 750 by 2015. The structure is 28 ft (8.5 m) long and 23 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesAthol Avenue
CrossesUnnamed Stream
Location0.3 MI E of Loudon Ave
RouteCounty Highway 144
CountyHoward County
StateMaryland
Coordinates39.19029, -76.73998
Functional classUrban 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating68.5 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length28 ft (8.5 m)
Longest span26 ft (7.9 m)
Deck width23 ft (7 m)
Roadway width21 ft (6.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic680 (1995)
Projected traffic750 by 2015
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Athol Avenue over Unnamed Stream built?

It was built in 1945, making it 80 years old in 2025. It was reconstructed in 1983.

What condition is Athol Avenue over Unnamed Stream 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 April 2023.

How much traffic does Athol Avenue over Unnamed Stream carry?

About 680 vehicles per day (1995 count), of which roughly 4% are trucks.

How long is Athol Avenue over Unnamed Stream?

The structure is 28 ft (8.5 m) long with a longest span of 26 ft (7.9 m) and a deck 23 ft wide.

Who owns Athol Avenue over Unnamed Stream?

It is owned by the County Highway Agency.