US Bridges

Md 36 over Koontz Run

Good

Allegany County, Maryland · 0.05 Mile North of Md 657 · Structure no. 100000010166010

Built
2011
14 years old
Condition
Good
inspected August 2023
Type
Slab
Prestressed Concrete
Length
26 ft
1 main span
Daily traffic
8,275
2008 count
Owner
State
State Highway Agency

About this bridge

Md 36 over Koontz Run is a prestressed concrete slab carrying Md 36 over Koontz Run in Allegany County, Maryland. It was built in 2011, so it is 14 years old, younger 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 8,275 vehicles a day, roughly 8% of them trucks, projected to reach 12,800 by 2030. The structure is 26 ft (7.9 m) long and 46 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesMd 36
CrossesKoontz Run
Location0.05 Mile North of Md 657
RouteState Highway 36
CountyAllegany County
StateMaryland
Coordinates39.56737, -78.97948
Functional classRural Minor Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating64.3 US tons
Inventory rating49.6 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length26 ft (7.9 m)
Longest span20 ft (6.1 m)
Deck width46 ft (14 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,275 (2008)
Projected traffic12,800 by 2030
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$64,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Md 36 over Koontz Run built?

It was built in 2011, making it 14 years old in 2025.

What condition is Md 36 over Koontz 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 August 2023.

How much traffic does Md 36 over Koontz Run carry?

About 8,275 vehicles per day (2008 count), of which roughly 8% are trucks.

How long is Md 36 over Koontz Run?

The structure is 26 ft (7.9 m) long with a longest span of 20 ft (6.1 m) and a deck 46 ft wide.

Who owns Md 36 over Koontz Run?

It is owned by the State Highway Agency.