US Bridges

Park Valley Road over Sligo Creek

Good

Montgomery County, Maryland · At Sligo Creek Parkway · Structure no. 200000M-PK03010

Built
2019
6 years old
Condition
Good
inspected December 2023
Type
Slab
Prestressed Concrete
Length
38 ft
1 main span
Daily traffic
1,126
2021 count
Owner
Local
Local Park, Forest, or Reservation Agency

About this bridge

Park Valley Road over Sligo Creek is a prestressed concrete slab carrying Park Valley Road over Sligo Creek in Montgomery County, Maryland. It was built in 2019, so it is 6 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 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 1,126 vehicles a day, roughly 3% of them trucks, projected to reach 1,414 by 2041. The structure is 38 ft (11.6 m) long and 36 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesPark Valley Road
CrossesSligo Creek
LocationAt Sligo Creek Parkway
RouteFederal Lands Road 748
CountyMontgomery County
StateMaryland
Coordinates38.98977, -77.00677
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
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2023
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating68.6 US tons
Inventory rating55 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length38 ft (11.6 m)
Longest span34 ft (10.4 m)
Deck width36 ft (11 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,126 (2021)
Projected traffic1,414 by 2041
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerLocal Park, Forest, or Reservation Agency
Maintained byCounty 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 Park Valley Road over Sligo Creek built?

It was built in 2019, making it 6 years old in 2025.

What condition is Park Valley Road over Sligo Creek 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 2023.

How much traffic does Park Valley Road over Sligo Creek carry?

About 1,126 vehicles per day (2021 count), of which roughly 3% are trucks.

How long is Park Valley Road over Sligo Creek?

The structure is 38 ft (11.6 m) long with a longest span of 34 ft (10.4 m) and a deck 36 ft wide.

Who owns Park Valley Road over Sligo Creek?

It is owned by the Local Park, Forest, or Reservation Agency and maintained by the County Highway Agency.