US Bridges

Coffman Farms RD over Little Antietam Creek

Good

Washington County, Maryland · 0.1 MI E of Md RTE 34 · Structure no. 200000W-6371010

Built
1832
193 years old, rebuilt 2015
Condition
Good
inspected October 2023
Type
Arch - Deck
Masonry
Length
54 ft
2 main spans
Daily traffic
362
2019 count
Owner
County
County Highway Agency

About this bridge

Coffman Farms RD over Little Antietam Creek is a masonry arch - deck carrying Coffman Farms RD over Little Antietam Creek in Washington County, Maryland. It was built in 1832 and reconstructed in 2015, so it is 193 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.

It carries about 362 vehicles a day, roughly 5% of them trucks, projected to reach 555 by 2039. The structure is 54 ft (16.6 m) long and 20 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

No coordinates are recorded for this structure.

CarriesCoffman Farms RD
CrossesLittle Antietam Creek
Location0.1 MI E of Md RTE 34
RouteCounty Highway 637
Functional classRural Local

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 protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeArch - Deck
MaterialMasonry
DeckNot applicable
Main spans2
Design loadUnknown
Structure length54 ft (16.6 m)
Longest span22 ft (6.7 m)
Deck width20 ft (6 m)
Roadway width17 ft (5.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic362 (2019)
Projected traffic555 by 2039
Trucks5%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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$719,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Coffman Farms RD over Little Antietam Creek built?

It was built in 1832, making it 193 years old in 2025. It was reconstructed in 2015.

What condition is Coffman Farms RD over Little 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 October 2023.

How much traffic does Coffman Farms RD over Little Antietam Creek carry?

About 362 vehicles per day (2019 count), of which roughly 5% are trucks.

How long is Coffman Farms RD over Little Antietam Creek?

The structure is 54 ft (16.6 m) long with a longest span of 22 ft (6.7 m) and a deck 20 ft wide.

Who owns Coffman Farms RD over Little Antietam Creek?

It is owned by the County Highway Agency.