US Bridges

Md 45 over Western Run

Fair

Baltimore County, Maryland · 0.75 Mile North of Md 145 · Structure no. 100000030042010

Built
1917
108 years old
Condition
Fair
inspected August 2024
Type
Arch - Deck
Concrete
Length
90 ft
1 main span
Daily traffic
23,992
9 count
Owner
State
State Highway Agency

About this bridge

Md 45 over Western Run is a concrete arch - deck carrying Md 45 over Western Run in Baltimore County, Maryland. It was built in 1917, so it is 108 years old, older 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 23,992 vehicles a day, roughly 8% of them trucks, projected to reach 23,800 by 26. The structure is 90 ft (27.4 m) long and 28 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

No coordinates are recorded for this structure.

CarriesMd 45
CrossesWestern Run
Location0.75 Mile North of Md 145
RouteState Highway 45
CountyBaltimore County
StateMaryland
Functional classUrban Minor Arterial

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating36 US tons
Inventory rating19.5 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length90 ft (27.4 m)
Longest span90 ft (27.4 m)
Deck width28 ft (8.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic23,992 (9)
Projected traffic23,800 by 26
Trucks8%
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

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$174,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Md 45 over Western Run built?

It was built in 1917, making it 108 years old in 2025.

What condition is Md 45 over Western Run 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 August 2024.

How much traffic does Md 45 over Western Run carry?

About 23,992 vehicles per day (9 count), of which roughly 8% are trucks.

How long is Md 45 over Western Run?

The structure is 90 ft (27.4 m) long with a longest span of 90 ft (27.4 m) and a deck 28 ft wide.

Who owns Md 45 over Western Run?

It is owned by the State Highway Agency.