US Bridges

Sligo Creek Parkwa over Sligo Creek Tributary

Fair

Montgomery County, Maryland · 0.9 Miles South of Md 320 · Structure no. 200000M-PK15010

Built
1996
29 years old
Condition
Fair
inspected October 2024
Type
Frame
Concrete
Length
22 ft
1 main span
Daily traffic
5,886
2024 count
Owner
County
County Highway Agency

About this bridge

Sligo Creek Parkwa over Sligo Creek Tributary is a concrete frame carrying Sligo Creek Parkwa over Sligo Creek Tributary in Montgomery County, Maryland. It was built in 1996, so it is 29 years old, younger 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 5,886 vehicles a day, roughly 3% of them trucks, projected to reach 6,543 by 2044. The structure is 22 ft (6.7 m) long and 36 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesSligo Creek Parkwa
CrossesSligo Creek Tributary
Location0.9 Miles South of Md 320
CountyMontgomery County
StateMaryland
Coordinates38.98456, -77.00292
Functional classUrban 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length22 ft (6.7 m)
Longest span22 ft (6.7 m)
Deck width36 ft (10.9 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,886 (2024)
Projected traffic6,543 by 2044
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway 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 Sligo Creek Parkwa over Sligo Creek Tributary built?

It was built in 1996, making it 29 years old in 2025.

What condition is Sligo Creek Parkwa over Sligo Creek Tributary 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 October 2024.

How much traffic does Sligo Creek Parkwa over Sligo Creek Tributary carry?

About 5,886 vehicles per day (2024 count), of which roughly 3% are trucks.

How long is Sligo Creek Parkwa over Sligo Creek Tributary?

The structure is 22 ft (6.7 m) long with a longest span of 22 ft (6.7 m) and a deck 36 ft wide.

Who owns Sligo Creek Parkwa over Sligo Creek Tributary?

It is owned by the County Highway Agency.