US Bridges

US 220 over Trib to North Br Potomac

Fair

Allegany County, Maryland · 1.46 MI N of Md 830A · Structure no. 100000010076010

Built
1929
96 years old, rebuilt 1955
Condition
Fair
inspected February 2025
Type
Slab
Concrete
Length
24 ft
1 main span
Daily traffic
7,111
2009 count
Owner
State
State Highway Agency

About this bridge

US 220 over Trib to North Br Potomac is a concrete slab carrying US 220 over Trib to North Br Potomac in Allegany County, Maryland. It was built in 1929 and reconstructed in 1955, so it is 96 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 8,418 by 2026. The structure is 24 ft (7.3 m) long and 46 ft wide. If it were closed, the detour would be 49.7 mi (80 km).

Location

Open in Google Maps
CarriesUS 220
CrossesTrib to North Br Potomac
Location1.46 MI N of Md 830A
RouteU.S. Route 220
CountyAllegany County
StateMaryland
Coordinates39.49066, -78.93976
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2025
Inspection intervalevery 12 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 geometry6: Equal to present minimum criteria
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating37.5 US tons
Inventory rating22.5 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length24 ft (7.3 m)
Longest span22 ft (6.7 m)
Deck width46 ft (14 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,111 (2009)
Projected traffic8,418 by 2026
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed49.7 mi (80 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$73,000
NavigationNo navigation control on waterway

Frequently asked questions

When was US 220 over Trib to North Br Potomac built?

It was built in 1929, making it 96 years old in 2025. It was reconstructed in 1955.

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 February 2025.

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 24 ft (7.3 m) long with a longest span of 22 ft (6.7 m) and a deck 46 ft wide.

Who owns US 220 over Trib to North Br Potomac?

It is owned by the State Highway Agency.