US Bridges

Md 64 over Antietam Creek

Fair

Washington County, Maryland · 0.36 M E of Antietam DR · Structure no. 100000210028010

Built
1933
92 years old
Condition
Fair
inspected August 2024
Type
Arch - Deck
Concrete
Length
108 ft
2 main spans
Daily traffic
12,022
2018 count
Owner
State
State Highway Agency

About this bridge

Md 64 over Antietam Creek is a concrete arch - deck carrying Md 64 over Antietam Creek in Washington County, Maryland. It was built in 1933, so it is 92 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 12,022 vehicles a day, roughly 8% of them trucks, projected to reach 12,079 by 2038. The structure is 108 ft (32.9 m) long and 34 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesMd 64
CrossesAntietam Creek
Location0.36 M E of Antietam DR
RouteState Highway 64
CountyWashington County
StateMaryland
Coordinates39.6426, -77.68344
Functional classUrban Minor Arterial

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating78.5 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length108 ft (32.9 m)
Longest span50 ft (15.2 m)
Deck width34 ft (10.4 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,022 (2018)
Projected traffic12,079 by 2038
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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$242,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Md 64 over Antietam Creek built?

It was built in 1933, making it 92 years old in 2025.

What condition is Md 64 over Antietam Creek 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 August 2024.

How much traffic does Md 64 over Antietam Creek carry?

About 12,022 vehicles per day (2018 count), of which roughly 8% are trucks.

How long is Md 64 over Antietam Creek?

The structure is 108 ft (32.9 m) long with a longest span of 50 ft (15.2 m) and a deck 34 ft wide.

Who owns Md 64 over Antietam Creek?

It is owned by the State Highway Agency.