US Bridges

Md 831A over Braddock Run

Good

Allegany County, Maryland · 0.06 MI N of US 40AL · Structure no. 100000010002010

Built
1900
125 years old, rebuilt 1929
Condition
Good
inspected December 2024
Type
Arch - Deck
Masonry
Length
34 ft
1 main span
Daily traffic
599
2006 count
Owner
State
State Highway Agency

About this bridge

Md 831A over Braddock Run is a masonry arch - deck carrying Md 831A over Braddock Run in Allegany County, Maryland. It was built in 1900 and reconstructed in 1929, so it is 125 years old, older than the Maryland average of 52.6 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 599 vehicles a day, roughly 8% of them trucks, projected to reach 706 by 2026. The structure is 34 ft (10.4 m) long and 31 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesMd 831A
CrossesBraddock Run
Location0.06 MI N of US 40AL
RouteState Highway 831A
Coordinates39.67007, -78.79338
Functional classUrban Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating55 US tons
Inventory rating34 US tons

Structure

Structure typeArch - Deck
MaterialMasonry
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length34 ft (10.4 m)
Longest span31 ft (9.4 m)
Deck width31 ft (9.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic599 (2006)
Projected traffic706 by 2026
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

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 Md 831A over Braddock Run built?

It was built in 1900, making it 125 years old in 2025. It was reconstructed in 1929.

What condition is Md 831A over Braddock Run in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in December 2024.

How much traffic does Md 831A over Braddock Run carry?

About 599 vehicles per day (2006 count), of which roughly 8% are trucks.

How long is Md 831A over Braddock Run?

The structure is 34 ft (10.4 m) long with a longest span of 31 ft (9.4 m) and a deck 31 ft wide.

Who owns Md 831A over Braddock Run?

It is owned by the State Highway Agency.