US Bridges

Roxbury Road over Dorsey Branch

Fair

Howard County, Maryland · 0.5 MI E of Md RTE 97 · Structure no. 200000HO0030010

Built
2002
23 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
73 ft
1 main span
Daily traffic
1,384
2024 count
Owner
County
County Highway Agency

About this bridge

Roxbury Road over Dorsey Branch is a steel stringer/multi-beam or girder carrying Roxbury Road over Dorsey Branch in Howard County, Maryland. It was built in 2002, so it is 23 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 1,384 vehicles a day, roughly 4% of them trucks, projected to reach 1,690 by 2044. The structure is 73 ft (22.3 m) long and 31 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesRoxbury Road
CrossesDorsey Branch
Location0.5 MI E of Md RTE 97
RouteCounty Highway 45
CountyHoward County
StateMaryland
Coordinates39.26141, -77.03786
Functional classRural Minor Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2024
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating85 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length73 ft (22.3 m)
Longest span70 ft (21.3 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,384 (2024)
Projected traffic1,690 by 2044
Trucks4%
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 Roxbury Road over Dorsey Branch built?

It was built in 2002, making it 23 years old in 2025.

What condition is Roxbury Road over Dorsey Branch 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 April 2024.

How much traffic does Roxbury Road over Dorsey Branch carry?

About 1,384 vehicles per day (2024 count), of which roughly 4% are trucks.

How long is Roxbury Road over Dorsey Branch?

The structure is 73 ft (22.3 m) long with a longest span of 70 ft (21.3 m) and a deck 31 ft wide.

Who owns Roxbury Road over Dorsey Branch?

It is owned by the County Highway Agency.