US Bridges

Harris Mill Road over Deer Creek

Good

Baltimore County, Maryland · 0.59 MI E of Mason-Dix RD · Structure no. 200000B-0188010

Built
2006
19 years old
Condition
Good
inspected June 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
65 ft
1 main span
Daily traffic
298
2023 count
Owner
County
County Highway Agency

About this bridge

Harris Mill Road over Deer Creek is a prestressed concrete box beam or girders - multiple carrying Harris Mill Road over Deer Creek in Baltimore County, Maryland. It was built in 2006, so it is 19 years old, younger 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 298 vehicles a day, roughly 5% of them trucks, projected to reach 895 by 2043. The structure is 65 ft (19.8 m) long and 20 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesHarris Mill Road
CrossesDeer Creek
Location0.59 MI E of Mason-Dix RD
RouteCounty Highway 112
CountyBaltimore County
StateMaryland
Coordinates39.7179, -76.50736
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating110.1 US tons
Inventory rating68.5 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckNot applicable
Main spans1
Design loadHS 25 or greater
Structure length65 ft (19.8 m)
Longest span61 ft (18.6 m)
Deck width20 ft (6.2 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic298 (2023)
Projected traffic895 by 2043
Trucks5%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$14,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Harris Mill Road over Deer Creek built?

It was built in 2006, making it 19 years old in 2025.

What condition is Harris Mill Road over Deer 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 June 2023.

How much traffic does Harris Mill Road over Deer Creek carry?

About 298 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Harris Mill Road over Deer Creek?

The structure is 65 ft (19.8 m) long with a longest span of 61 ft (18.6 m) and a deck 20 ft wide.

Who owns Harris Mill Road over Deer Creek?

It is owned by the County Highway Agency.