US Bridges

Bynum Road over Bynum Run

Fair

Harford County, Maryland · 0.5 Miles NE of Md 24 · Structure no. 200000H-0046010

Built
1976
49 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
44 ft
1 main span
Daily traffic
4,310
2019 count
Owner
County
County Highway Agency

About this bridge

Bynum Road over Bynum Run is a prestressed concrete stringer/multi-beam or girder carrying Bynum Road over Bynum Run in Harford County, Maryland. It was built in 1976, so it is 49 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 4,310 vehicles a day, roughly 5% of them trucks, projected to reach 5,260 by 2039. The structure is 44 ft (13.4 m) long and 39 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesBynum Road
CrossesBynum Run
Location0.5 Miles NE of Md 24
RouteCounty Highway 912
CountyHarford County
StateMaryland
Coordinates39.56407, -76.3649
Functional classRural Minor 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
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 rating71 US tons
Inventory rating42.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length44 ft (13.4 m)
Longest span40 ft (12.2 m)
Deck width39 ft (11.9 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,310 (2019)
Projected traffic5,260 by 2039
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Bynum Road over Bynum Run built?

It was built in 1976, making it 49 years old in 2025.

What condition is Bynum Road over Bynum 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 July 2023.

How much traffic does Bynum Road over Bynum Run carry?

About 4,310 vehicles per day (2019 count), of which roughly 5% are trucks.

How long is Bynum Road over Bynum Run?

The structure is 44 ft (13.4 m) long with a longest span of 40 ft (12.2 m) and a deck 39 ft wide.

Who owns Bynum Road over Bynum Run?

It is owned by the County Highway Agency.