US Bridges

Md 166 Nbr over Ramp 5 from Umbc

Fair

Baltimore County, Maryland · 0.38 Mile North of Is 195 · Structure no. 100000030291011

Built
1975
50 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
268 ft
3 main spans
Daily traffic
11,636
2012 count
Owner
State
State Highway Agency

About this bridge

Md 166 Nbr over Ramp 5 from Umbc is a steel continuous stringer/multi-beam or girder carrying Md 166 Nbr over Ramp 5 from Umbc in Baltimore County, Maryland. It was built in 1975, so it is 50 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 11,636 vehicles a day, roughly 8% of them trucks, projected to reach 13,964 by 2032. The structure is 268 ft (81.7 m) long and 55 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesMd 166 Nbr
CrossesRamp 5 from Umbc
Location0.38 Mile North of Is 195
RouteState Highway 166
CountyBaltimore County
StateMaryland
Coordinates39.24537, -76.71566
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66.5 US tons
Inventory rating40 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length268 ft (81.7 m)
Longest span92 ft (28 m)
Deck width55 ft (16.7 m)
Roadway width52 ft (15.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,636 (2012)
Projected traffic13,964 by 2032
Trucks8%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Md 166 Nbr over Ramp 5 from Umbc built?

It was built in 1975, making it 50 years old in 2025.

What condition is Md 166 Nbr over Ramp 5 from Umbc 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 Md 166 Nbr over Ramp 5 from Umbc carry?

About 11,636 vehicles per day (2012 count), of which roughly 8% are trucks.

How long is Md 166 Nbr over Ramp 5 from Umbc?

The structure is 268 ft (81.7 m) long with a longest span of 92 ft (28 m) and a deck 55 ft wide.

Who owns Md 166 Nbr over Ramp 5 from Umbc?

It is owned by the State Highway Agency.