US Bridges

US 40 over Little Catoctin Creek

Fair

Frederick County, Maryland · 0.2 M E of Harmony Road · Structure no. 100000100032010

Built
1936
89 years old
Condition
Fair
inspected April 2024
Type
Arch - Deck
Concrete
Length
38 ft
1 main span
Daily traffic
5,522
2009 count
Owner
State
State Highway Agency

About this bridge

US 40 over Little Catoctin Creek is a concrete arch - deck carrying US 40 over Little Catoctin Creek in Frederick County, Maryland. It was built in 1936, so it is 89 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 6 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 5,522 vehicles a day, roughly 8% of them trucks, projected to reach 6,678 by 2026. The structure is 38 ft (11.6 m) long and 45 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesUS 40
CrossesLittle Catoctin Creek
Location0.2 M E of Harmony Road
RouteU.S. Route 40
CountyFrederick County
StateMaryland
Coordinates39.48906, -77.53326
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating75.9 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length38 ft (11.6 m)
Longest span38 ft (11.6 m)
Deck width45 ft (13.6 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,522 (2009)
Projected traffic6,678 by 2026
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 40 over Little Catoctin Creek built?

It was built in 1936, making it 89 years old in 2025.

What condition is US 40 over Little Catoctin 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 US 40 over Little Catoctin Creek carry?

About 5,522 vehicles per day (2009 count), of which roughly 8% are trucks.

How long is US 40 over Little Catoctin Creek?

The structure is 38 ft (11.6 m) long with a longest span of 38 ft (11.6 m) and a deck 45 ft wide.

Who owns US 40 over Little Catoctin Creek?

It is owned by the State Highway Agency.