US Bridges

Dairy Road over Tributary to Owl Branch

Good

Baltimore County, Maryland · 0.45 MI W of Is 83 · Structure no. 200000B-0334020

Built
1963
62 years old
Condition
Good
inspected May 2023
Type
Culvert
Concrete
Length
35 ft
Daily traffic
350
2023 count
Owner
County
County Highway Agency

About this bridge

Dairy Road over Tributary to Owl Branch is a concrete culvert carrying Dairy Road over Tributary to Owl Branch in Baltimore County, Maryland. It was built in 1963, so it is 62 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 350 vehicles a day, roughly 5% of them trucks, projected to reach 1,149 by 2043. The structure is 35 ft (10.7 m) long. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesDairy Road
CrossesTributary to Owl Branch
Location0.45 MI W of Is 83
RouteCounty Highway 71
CountyBaltimore County
StateMaryland
Coordinates39.64872, -76.67231
Functional classRural 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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68 US tons
Inventory rating39.5 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans0
Design loadHS 20
Structure length35 ft (10.7 m)
Longest span16 ft (4.9 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic350 (2023)
Projected traffic1,149 by 2043
Trucks5%
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 Dairy Road over Tributary to Owl Branch built?

It was built in 1963, making it 62 years old in 2025.

What condition is Dairy Road over Tributary to Owl Branch 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 May 2023.

How much traffic does Dairy Road over Tributary to Owl Branch carry?

About 350 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Dairy Road over Tributary to Owl Branch?

The structure is 35 ft (10.7 m) long with a longest span of 16 ft (4.9 m).

Who owns Dairy Road over Tributary to Owl Branch?

It is owned by the County Highway Agency.