US Bridges

US 40 Scn over Snib Hollow Run

Fair

Allegany County, Maryland · 0.48 M E of Stone Road · Structure no. 100000010037010

Built
1916
109 years old
Condition
Fair
inspected September 2023
Type
Slab
Concrete
Length
29 ft
2 main spans
Daily traffic
281
2009 count
Owner
State
State Highway Agency

About this bridge

US 40 Scn over Snib Hollow Run is a concrete slab carrying US 40 Scn over Snib Hollow Run in Allegany County, Maryland. It was built in 1916, so it is 109 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 281 vehicles a day, roughly 8% of them trucks, projected to reach 312 by 2026. The structure is 29 ft (8.8 m) long and 24 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesUS 40 Scn
CrossesSnib Hollow Run
Location0.48 M E of Stone Road
RouteU.S. Route 40
CountyAllegany County
StateMaryland
Coordinates39.70666, -78.36774
Functional classRural 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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating79 US tons
Inventory rating47.5 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length29 ft (8.8 m)
Longest span14 ft (4.3 m)
Deck width24 ft (7.3 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic281 (2009)
Projected traffic312 by 2026
Trucks8%
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

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$46,000
NavigationNo navigation control on waterway

Frequently asked questions

When was US 40 Scn over Snib Hollow Run built?

It was built in 1916, making it 109 years old in 2025.

What condition is US 40 Scn over Snib Hollow Run 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 40 Scn over Snib Hollow Run carry?

About 281 vehicles per day (2009 count), of which roughly 8% are trucks.

How long is US 40 Scn over Snib Hollow Run?

The structure is 29 ft (8.8 m) long with a longest span of 14 ft (4.3 m) and a deck 24 ft wide.

Who owns US 40 Scn over Snib Hollow Run?

It is owned by the State Highway Agency.