US Bridges

Md 30 over Maryland Midland RR

Fair

Baltimore County, Maryland · 0.62 Mile North of Md 795 · Structure no. 100000030031010

Built
1936
89 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
211 ft
3 main spans
Daily traffic
18,070
2009 count
Owner
State
State Highway Agency

About this bridge

Md 30 over Maryland Midland RR is a steel stringer/multi-beam or girder carrying Md 30 over Maryland Midland RR in Baltimore County, Maryland. It was built in 1936, so it is 89 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 5 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 18,070 vehicles a day, roughly 8% of them trucks, projected to reach 20,766 by 2026. The structure is 211 ft (64.3 m) long and 49 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

No coordinates are recorded for this structure.

CarriesMd 30
CrossesMaryland Midland RR
Location0.62 Mile North of Md 795
RouteState Highway 30
CountyBaltimore County
StateMaryland
Functional classUrban Other Principal 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.9 US tons
Inventory rating38 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length211 ft (64.3 m)
Longest span68 ft (20.7 m)
Deck width49 ft (14.8 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,070 (2009)
Projected traffic20,766 by 2026
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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$675,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was Md 30 over Maryland Midland RR built?

It was built in 1936, making it 89 years old in 2025.

What condition is Md 30 over Maryland Midland RR 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 June 2023.

How much traffic does Md 30 over Maryland Midland RR carry?

About 18,070 vehicles per day (2009 count), of which roughly 8% are trucks.

How long is Md 30 over Maryland Midland RR?

The structure is 211 ft (64.3 m) long with a longest span of 68 ft (20.7 m) and a deck 49 ft wide.

Who owns Md 30 over Maryland Midland RR?

It is owned by the State Highway Agency.