US Bridges

Md 77 over Beaver Branch

Fair

Frederick County, Maryland · 0.63 Mile West of Md 76 · Structure no. 100000100054010

Built
1928
97 years old
Condition
Fair
inspected May 2024
Type
Tee Beam
Concrete
Length
61 ft
2 main spans
Daily traffic
1,211
2009 count
Owner
State
State Highway Agency

About this bridge

Md 77 over Beaver Branch is a concrete tee beam carrying Md 77 over Beaver Branch in Frederick County, Maryland. It was built in 1928, so it is 97 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 1,211 vehicles a day, roughly 8% of them trucks, projected to reach 2,365 by 2026. The structure is 61 ft (18.6 m) long and 26 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesMd 77
CrossesBeaver Branch
Location0.63 Mile West of Md 76
RouteState Highway 77
CountyFrederick County
StateMaryland
Coordinates39.60535, -77.33017
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.
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
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating54.5 US tons
Inventory rating33 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length61 ft (18.6 m)
Longest span28 ft (8.5 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deck16 ft (4.9 m)

Traffic and service

Average daily traffic1,211 (2009)
Projected traffic2,365 by 2026
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$105,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Md 77 over Beaver Branch built?

It was built in 1928, making it 97 years old in 2025.

What condition is Md 77 over Beaver Branch 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 Md 77 over Beaver Branch carry?

About 1,211 vehicles per day (2009 count), of which roughly 8% are trucks.

How long is Md 77 over Beaver Branch?

The structure is 61 ft (18.6 m) long with a longest span of 28 ft (8.5 m) and a deck 26 ft wide.

Who owns Md 77 over Beaver Branch?

It is owned by the State Highway Agency.