US Bridges

Md 100 EB over Md 100 Ramp a

Fair

Howard County, Maryland · 0.92 Mile West of US 1 · Structure no. 100000130058013

Built
1970
55 years old, rebuilt 1998
Condition
Fair
inspected March 2024
Type
Slab
Concrete Continuous
Length
143 ft
3 main spans
Daily traffic
84,712
2009 count
Owner
State
State Highway Agency

About this bridge

Md 100 EB over Md 100 Ramp a is a concrete continuous slab carrying Md 100 EB over Md 100 Ramp a in Howard County, Maryland. It was built in 1970 and reconstructed in 1998, so it is 55 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 84,712 vehicles a day, roughly 8% of them trucks, projected to reach 159,872 by 2029. The structure is 143 ft (43.6 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesMd 100 EB
CrossesMd 100 Ramp a
Location0.92 Mile West of US 1
RouteState Highway 100
Coordinates39.19859, -76.76856
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
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 inspectionMarch 2024
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 geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66 US tons
Inventory rating39.5 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length143 ft (43.6 m)
Longest span54 ft (16.5 m)
Deck width43 ft (13 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic84,712 (2009)
Projected traffic159,872 by 2029
Trucks8%
Lanes on structure2
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 100 EB over Md 100 Ramp a built?

It was built in 1970, making it 55 years old in 2025. It was reconstructed in 1998.

What condition is Md 100 EB over Md 100 Ramp a 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 March 2024.

How much traffic does Md 100 EB over Md 100 Ramp a carry?

About 84,712 vehicles per day (2009 count), of which roughly 8% are trucks.

How long is Md 100 EB over Md 100 Ramp a?

The structure is 143 ft (43.6 m) long with a longest span of 54 ft (16.5 m) and a deck 43 ft wide.

Who owns Md 100 EB over Md 100 Ramp a?

It is owned by the State Highway Agency.