US Bridges

Tank Road over North Br Patapsco River

Fair

Carroll County, Maryland · 0.53 MI S of Wesley RD · Structure no. 200000CL0365010

Built
1974
51 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
90 ft
2 main spans
Daily traffic
174
2021 count
Owner
County
County Highway Agency

About this bridge

Tank Road over North Br Patapsco River is a steel stringer/multi-beam or girder carrying Tank Road over North Br Patapsco River in Carroll County, Maryland. It was built in 1974, 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 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 174 vehicles a day, roughly 5% of them trucks, projected to reach 286 by 2041. The structure is 90 ft (27.3 m) long and 21 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesTank Road
CrossesNorth Br Patapsco River
Location0.53 MI S of Wesley RD
RouteCounty Highway 464
CountyCarroll County
StateMaryland
Coordinates39.53021, -76.88305
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating110.1 US tons
Inventory rating62.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length90 ft (27.3 m)
Longest span42 ft (12.8 m)
Deck width21 ft (6.5 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic174 (2021)
Projected traffic286 by 2041
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 Tank Road over North Br Patapsco River built?

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

What condition is Tank Road over North Br Patapsco River 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 September 2023.

How much traffic does Tank Road over North Br Patapsco River carry?

About 174 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is Tank Road over North Br Patapsco River?

The structure is 90 ft (27.3 m) long with a longest span of 42 ft (12.8 m) and a deck 21 ft wide.

Who owns Tank Road over North Br Patapsco River?

It is owned by the County Highway Agency.