US Bridges

Hunter Mill Road over First Mine Branch

Fair

Baltimore County, Maryland · 0.4 MI NE of Bacon RD · Structure no. 200000B-0024010

Built
1988
37 years old
Condition
Fair
inspected April 2023
Type
Truss - Thru
Steel
Length
73 ft
1 main span
Daily traffic
392
2023 count
Owner
County
County Highway Agency

About this bridge

Hunter Mill Road over First Mine Branch is a steel truss - thru carrying Hunter Mill Road over First Mine Branch in Baltimore County, Maryland. It was built in 1988, so it is 37 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 392 vehicles a day, roughly 5% of them trucks, projected to reach 736 by 2043. The structure is 73 ft (22.3 m) long and 16 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesHunter Mill Road
CrossesFirst Mine Branch
Location0.4 MI NE of Bacon RD
RouteCounty Highway 95
CountyBaltimore County
StateMaryland
Coordinates39.6225, -76.61822
Functional classRural Local

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 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating46 US tons
Inventory rating27.4 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckSteel plate
Main spans1
Design loadHS 20
Structure length73 ft (22.3 m)
Longest span71 ft (21.6 m)
Deck width16 ft (4.8 m)
Roadway width13 ft (4.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic392 (2023)
Projected traffic736 by 2043
Trucks5%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 Hunter Mill Road over First Mine Branch built?

It was built in 1988, making it 37 years old in 2025.

What condition is Hunter Mill Road over First Mine 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 2023.

How much traffic does Hunter Mill Road over First Mine Branch carry?

About 392 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Hunter Mill Road over First Mine Branch?

The structure is 73 ft (22.3 m) long with a longest span of 71 ft (21.6 m) and a deck 16 ft wide.

Who owns Hunter Mill Road over First Mine Branch?

It is owned by the County Highway Agency.