US Bridges

US 220 over Trib to North Br Potomac

Fair

Allegany County, Maryland · 0.49 MI N of Md 135A · Structure no. 100000010167030

Built
1951
74 years old
Condition
Fair
inspected September 2023
Type
Culvert
Steel
Length
23 ft
4 main spans
Daily traffic
7,111
2009 count
Owner
State
State Highway Agency

About this bridge

US 220 over Trib to North Br Potomac is a steel culvert carrying US 220 over Trib to North Br Potomac in Allegany County, Maryland. It was built in 1951, so it is 74 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 7,111 vehicles a day, roughly 8% of them trucks, projected to reach 9,931 by 2029. The structure is 23 ft (6.9 m) long. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesUS 220
CrossesTrib to North Br Potomac
Location0.49 MI N of Md 135A
RouteU.S. Route 220
CountyAllegany County
StateMaryland
Coordinates39.46262, -78.97018
Functional classRural Principal Arterial - Other

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 protection7 GoodSome minor problems.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 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
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans4
Design loadUnknown
Structure length23 ft (6.9 m)
Longest span4 ft (1.2 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,111 (2009)
Projected traffic9,931 by 2029
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 US 220 over Trib to North Br Potomac built?

It was built in 1951, making it 74 years old in 2025.

What condition is US 220 over Trib to North Br Potomac 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 US 220 over Trib to North Br Potomac carry?

About 7,111 vehicles per day (2009 count), of which roughly 8% are trucks.

How long is US 220 over Trib to North Br Potomac?

The structure is 23 ft (6.9 m) long with a longest span of 4 ft (1.2 m).

Who owns US 220 over Trib to North Br Potomac?

It is owned by the State Highway Agency.