US Bridges

Kalmia Road N.W. over Rock Creek Tributary

Good

District of Columbia, District of Columbia · Kalmia Road · Structure no. 0103

Built
2015
10 years old
Condition
Good
inspected November 2023
Type
Culvert
Concrete
Length
24 ft
1 main span
Daily traffic
17,000
2013 count
Owner
State
State Highway Agency

About this bridge

Kalmia Road N.W. over Rock Creek Tributary is a concrete culvert carrying Kalmia Road N.W. over Rock Creek Tributary in District of Columbia, District of Columbia. It was built in 2015, so it is 10 years old, younger than the District of Columbia average of 63.7 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 17,000 vehicles a day, roughly 1% of them trucks, projected to reach 23,200 by 2037. The structure is 24 ft (7.3 m) long and 60 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesKalmia Road N.W.
CrossesRock Creek Tributary
LocationKalmia Road
RouteCity Street 0_
CountyDistrict of Columbia
StateDistrict of Columbia
Coordinates38.98639, -77.04248
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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating46.1 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHL 93
Structure length24 ft (7.3 m)
Longest span24 ft (7.3 m)
Deck width60 ft (18.3 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,000 (2013)
Projected traffic23,200 by 2037
Trucks1%
Lanes on structure3
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

OwnerState Highway Agency
Maintained byState 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 Kalmia Road N.W. over Rock Creek Tributary built?

It was built in 2015, making it 10 years old in 2025.

What condition is Kalmia Road N.W. over Rock Creek Tributary 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 November 2023.

How much traffic does Kalmia Road N.W. over Rock Creek Tributary carry?

About 17,000 vehicles per day (2013 count), of which roughly 1% are trucks.

How long is Kalmia Road N.W. over Rock Creek Tributary?

The structure is 24 ft (7.3 m) long with a longest span of 24 ft (7.3 m) and a deck 60 ft wide.

Who owns Kalmia Road N.W. over Rock Creek Tributary?

It is owned by the State Highway Agency.