US Bridges

Oconnor Road over Deep Run

Poor

Anne Arundel County, Maryland · 0.1 MI N of Md RTE 103 · Structure no. 200000AA5009010

Built
1944
81 years old, rebuilt 1992
Condition
Poor
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
28 ft
1 main span
Daily traffic
599
2021 count
Owner
County
County Highway Agency

About this bridge

Oconnor Road over Deep Run is a steel stringer/multi-beam or girder carrying Oconnor Road over Deep Run in Anne Arundel County, Maryland. It was built in 1944 and reconstructed in 1992, so it is 81 years old, older than the Maryland average of 52.6 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 599 vehicles a day, roughly 25% of them trucks, projected to reach 650 by 2045. The structure is 28 ft (8.5 m) long and 20 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

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CarriesOconnor Road
CrossesDeep Run
Location0.1 MI N of Md RTE 103
RouteCounty Highway 578
CountyAnne Arundel County
StateMaryland
Coordinates39.17931, -76.74553
Functional classUrban Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating110.1 US tons
Inventory rating61.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadUnknown
Structure length28 ft (8.5 m)
Longest span24 ft (7.3 m)
Deck width20 ft (6.1 m)
Roadway width19 ft (5.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic599 (2021)
Projected traffic650 by 2045
Trucks25%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$105,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Oconnor Road over Deep Run built?

It was built in 1944, making it 81 years old in 2025. It was reconstructed in 1992.

What condition is Oconnor Road over Deep Run in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in August 2024.

How much traffic does Oconnor Road over Deep Run carry?

About 599 vehicles per day (2021 count), of which roughly 25% are trucks.

How long is Oconnor Road over Deep Run?

The structure is 28 ft (8.5 m) long with a longest span of 24 ft (7.3 m) and a deck 20 ft wide.

Who owns Oconnor Road over Deep Run?

It is owned by the County Highway Agency.