US Bridges

US 40 over Hamilton Run

Fair

Washington County, Maryland · 0.27 Mile East of Md 64 · Structure no. 100000210013040

Built
1941
84 years old
Condition
Fair
inspected May 2024
Type
Frame
Concrete
Length
30 ft
1 main span
Daily traffic
35,842
2009 count
Owner
State
State Highway Agency

About this bridge

US 40 over Hamilton Run is a concrete frame carrying US 40 over Hamilton Run in Washington County, Maryland. It was built in 1941, so it is 84 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 35,842 vehicles a day, roughly 8% of them trucks, projected to reach 41,302 by 2029. The structure is 30 ft (9.1 m) long and 144 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesUS 40
CrossesHamilton Run
Location0.27 Mile East of Md 64
RouteU.S. Route 40
CountyWashington County
StateMaryland
Coordinates39.63522, -77.70555
Functional classUrban Other Principal 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 inspectionMay 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 geometry9: Superior to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating60 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length30 ft (9.1 m)
Longest span30 ft (9.1 m)
Deck width144 ft (43.9 m)
Roadway width119 ft (36.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35,842 (2009)
Projected traffic41,302 by 2029
Trucks8%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 40 over Hamilton Run built?

It was built in 1941, making it 84 years old in 2025.

What condition is US 40 over Hamilton 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 May 2024.

How much traffic does US 40 over Hamilton Run carry?

About 35,842 vehicles per day (2009 count), of which roughly 8% are trucks.

How long is US 40 over Hamilton Run?

The structure is 30 ft (9.1 m) long with a longest span of 30 ft (9.1 m) and a deck 144 ft wide.

Who owns US 40 over Hamilton Run?

It is owned by the State Highway Agency.