US Bridges

East Oak Ridge Dri over Antietam Creek

GoodPosted for load

Washington County, Maryland · 0.09 MI W of Alt US Rt 40 · Structure no. 200000W-4001010

Built
1833
192 years old, rebuilt 2008
Condition
Good
inspected November 2023
Type
Arch - Deck
Masonry
Length
109 ft
3 main spans
Daily traffic
12,292
2023 count
Owner
County
County Highway Agency

About this bridge

East Oak Ridge Dri over Antietam Creek is a masonry arch - deck carrying East Oak Ridge Dri over Antietam Creek in Washington County, Maryland. It was built in 1833 and reconstructed in 2008, so it is 192 years old, older than the Maryland average of 52.6 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. Its operating status is: posted for load restriction.

It carries about 12,292 vehicles a day, roughly 5% of them trucks, projected to reach 16,459 by 2043. The structure is 109 ft (33.2 m) long and 20 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesEast Oak Ridge Dri
CrossesAntietam Creek
Location0.09 MI W of Alt US Rt 40
RouteCounty Highway 400
Coordinates39.61072, -77.71208
Functional classUrban Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating110.1 US tons
Inventory rating93.8 US tons

Structure

Structure typeArch - Deck
MaterialMasonry
DeckNot applicable
Main spans3
Design loadHS 20
Structure length109 ft (33.2 m)
Longest span35 ft (10.7 m)
Deck width20 ft (6.1 m)
Roadway width17 ft (5.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,292 (2023)
Projected traffic16,459 by 2043
Trucks5%
Lanes on structure1
Traffic directionOne-lane bridge for two-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 statusEligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$360,000
NavigationNo navigation control on waterway

Frequently asked questions

When was East Oak Ridge Dri over Antietam Creek built?

It was built in 1833, making it 192 years old in 2025. It was reconstructed in 2008.

What condition is East Oak Ridge Dri over Antietam Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in November 2023.

How much traffic does East Oak Ridge Dri over Antietam Creek carry?

About 12,292 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is East Oak Ridge Dri over Antietam Creek?

The structure is 109 ft (33.2 m) long with a longest span of 35 ft (10.7 m) and a deck 20 ft wide.

Who owns East Oak Ridge Dri over Antietam Creek?

It is owned by the County Highway Agency.