US Bridges

Cedar Lane over Rock Creek

Good

Montgomery County, Maryland · At Beach Drive · Structure no. 200000M-0074010

Built
1959
66 years old, rebuilt 2011
Condition
Good
inspected August 2023
Type
Slab
Prestressed Concrete
Length
172 ft
4 main spans
Daily traffic
13,424
2023 count
Owner
County
County Highway Agency

About this bridge

Cedar Lane over Rock Creek is a prestressed concrete slab carrying Cedar Lane over Rock Creek in Montgomery County, Maryland. It was built in 1959 and reconstructed in 2011, so it is 66 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 13,424 vehicles a day, roughly 5% of them trucks, projected to reach 18,689 by 2043. The structure is 172 ft (52.4 m) long and 55 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesCedar Lane
CrossesRock Creek
LocationAt Beach Drive
RouteCounty Highway 319
CountyMontgomery County
StateMaryland
Coordinates39.01166, -77.09118
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51.5 US tons
Inventory rating39.7 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckNot applicable
Main spans4
Design loadUnknown
Structure length172 ft (52.4 m)
Longest span41 ft (12.5 m)
Deck width55 ft (16.7 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,424 (2023)
Projected traffic18,689 by 2043
Trucks5%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.1 mi (5 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$32,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Cedar Lane over Rock Creek built?

It was built in 1959, making it 66 years old in 2025. It was reconstructed in 2011.

What condition is Cedar Lane over Rock 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 August 2023.

How much traffic does Cedar Lane over Rock Creek carry?

About 13,424 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Cedar Lane over Rock Creek?

The structure is 172 ft (52.4 m) long with a longest span of 41 ft (12.5 m) and a deck 55 ft wide.

Who owns Cedar Lane over Rock Creek?

It is owned by the County Highway Agency.