US Bridges

Md 494 over Conococheague Creek

Fair

Washington County, Maryland · 2.77 Miles East of Md 57 · Structure no. 100000210042010

Built
1932
93 years old
Condition
Fair
inspected April 2024
Type
Truss - Thru
Steel
Length
272 ft
2 main spans
Daily traffic
1,539
2024 count
Owner
State
State Highway Agency

About this bridge

Md 494 over Conococheague Creek is a steel truss - thru carrying Md 494 over Conococheague Creek in Washington County, Maryland. It was built in 1932, so it is 93 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 1,539 vehicles a day, roughly 7% of them trucks, projected to reach 1,539 by 2044. The structure is 272 ft (82.9 m) long and 29 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesMd 494
CrossesConococheague Creek
Location2.77 Miles East of Md 57
RouteState Highway 494
CountyWashington County
StateMaryland
Coordinates39.70818, -77.83384
Functional classRural Major 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
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 adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating75.5 US tons
Inventory rating45 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadH 20
Structure length272 ft (82.9 m)
Longest span132 ft (40.2 m)
Deck width29 ft (8.7 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deck12 ft (3.7 m)

Traffic and service

Average daily traffic1,539 (2024)
Projected traffic1,539 by 2044
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$512,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Md 494 over Conococheague Creek built?

It was built in 1932, making it 93 years old in 2025.

What condition is Md 494 over Conococheague 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 April 2024.

How much traffic does Md 494 over Conococheague Creek carry?

About 1,539 vehicles per day (2024 count), of which roughly 7% are trucks.

How long is Md 494 over Conococheague Creek?

The structure is 272 ft (82.9 m) long with a longest span of 132 ft (40.2 m) and a deck 29 ft wide.

Who owns Md 494 over Conococheague Creek?

It is owned by the State Highway Agency.