US Bridges

Hunter Mill Road over Tributary to First Mine

Fair

Baltimore County, Maryland · 100 Ft W of Vernon Road · Structure no. 200000B-0121010

Built
1988
37 years old
Condition
Fair
inspected July 2023
Type
Slab
Prestressed Concrete
Length
25 ft
1 main span
Daily traffic
325
2023 count
Owner
County
County Highway Agency

About this bridge

Hunter Mill Road over Tributary to First Mine is a prestressed concrete slab carrying Hunter Mill Road over Tributary to First Mine 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 325 vehicles a day, roughly 5% of them trucks, projected to reach 397 by 2043. The structure is 25 ft (7.7 m) long and 20 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesHunter Mill Road
CrossesTributary to First Mine
Location100 Ft W of Vernon Road
RouteCounty Highway 95
CountyBaltimore County
StateMaryland
Coordinates39.625, -76.59819
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating59.5 US tons
Inventory rating34.5 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadUnknown
Structure length25 ft (7.7 m)
Longest span24 ft (7.3 m)
Deck width20 ft (6.2 m)
Roadway width17 ft (5.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic325 (2023)
Projected traffic397 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-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$27,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Hunter Mill Road over Tributary to First Mine built?

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

What condition is Hunter Mill Road over Tributary to First Mine 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 July 2023.

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

About 325 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Hunter Mill Road over Tributary to First Mine?

The structure is 25 ft (7.7 m) long with a longest span of 24 ft (7.3 m) and a deck 20 ft wide.

Who owns Hunter Mill Road over Tributary to First Mine?

It is owned by the County Highway Agency.