US Bridges

Monroe Street over B&o Museum RR

Fair

Baltimore city, Maryland · Monroe ST & Mt Clare Mans · Structure no. 200000BC5215010

Built
1993
32 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
291 ft
4 main spans
Daily traffic
17,983
2024 count
Owner
City
City or Municipal Highway Agency

About this bridge

Monroe Street over B&o Museum RR is a steel continuous stringer/multi-beam or girder carrying Monroe Street over B&o Museum RR in Baltimore city, Maryland. It was built in 1993, so it is 32 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 17,983 vehicles a day, roughly 7% of them trucks, projected to reach 21,942 by 2044. The structure is 291 ft (88.7 m) long and 66 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesMonroe Street
CrossesB&o Museum RR
LocationMonroe ST & Mt Clare Mans
RouteCity Street 43
CountyBaltimore city
StateMaryland
Coordinates39.2791, -76.64631
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating84.4 US tons
Inventory rating50.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length291 ft (88.7 m)
Longest span85 ft (25.9 m)
Deck width66 ft (20.1 m)
Roadway width54 ft (16.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,983 (2024)
Projected traffic21,942 by 2044
Trucks7%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$22,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was Monroe Street over B&o Museum RR built?

It was built in 1993, making it 32 years old in 2025.

What condition is Monroe Street over B&o Museum 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 October 2024.

How much traffic does Monroe Street over B&o Museum RR carry?

About 17,983 vehicles per day (2024 count), of which roughly 7% are trucks.

How long is Monroe Street over B&o Museum RR?

The structure is 291 ft (88.7 m) long with a longest span of 85 ft (25.9 m) and a deck 66 ft wide.

Who owns Monroe Street over B&o Museum RR?

It is owned by the City or Municipal Highway Agency.