US Bridges

Md 103 over Deep Run

Fair

Howard County, Maryland · 0.89 Mile South of US 1 · Structure no. 100000130041010

Built
1937
88 years old
Condition
Fair
inspected March 2023
Type
Tee Beam
Concrete
Length
40 ft
1 main span
Daily traffic
8,191
2009 count
Owner
State
State Highway Agency

About this bridge

Md 103 over Deep Run is a concrete tee beam carrying Md 103 over Deep Run in Howard County, Maryland. It was built in 1937, so it is 88 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 8,191 vehicles a day, roughly 8% of them trucks, projected to reach 10,470 by 2026. The structure is 40 ft (12.2 m) long and 44 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesMd 103
CrossesDeep Run
Location0.89 Mile South of US 1
RouteState Highway 103
CountyHoward County
StateMaryland
Coordinates39.18075, -76.75129
Functional classUrban Collector

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.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating45 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length40 ft (12.2 m)
Longest span38 ft (11.6 m)
Deck width44 ft (13.4 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,191 (2009)
Projected traffic10,470 by 2026
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$116,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Md 103 over Deep Run built?

It was built in 1937, making it 88 years old in 2025.

What condition is Md 103 over Deep 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 March 2023.

How much traffic does Md 103 over Deep Run carry?

About 8,191 vehicles per day (2009 count), of which roughly 8% are trucks.

How long is Md 103 over Deep Run?

The structure is 40 ft (12.2 m) long with a longest span of 38 ft (11.6 m) and a deck 44 ft wide.

Who owns Md 103 over Deep Run?

It is owned by the State Highway Agency.