US Bridges

Md 28 over Little Monocacy River

Fair

Montgomery County, Maryland · 1.86 Miles E of Fred CO · Structure no. 100000150001010

Built
1925
100 years old
Condition
Fair
inspected May 2024
Type
Tee Beam
Concrete
Length
40 ft
1 main span
Daily traffic
5,050
2009 count
Owner
State
State Highway Agency

About this bridge

Md 28 over Little Monocacy River is a concrete tee beam carrying Md 28 over Little Monocacy River in Montgomery County, Maryland. It was built in 1925, so it is 100 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 5,050 vehicles a day, roughly 2% of them trucks, projected to reach 6,526 by 2026. The structure is 40 ft (12.2 m) long and 27 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesMd 28
CrossesLittle Monocacy River
Location1.86 Miles E of Fred CO
RouteState Highway 28
CountyMontgomery County
StateMaryland
Coordinates39.20874, -77.43242
Functional classRural Minor 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 rating61.9 US tons
Inventory rating37.5 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length40 ft (12.2 m)
Longest span36 ft (11 m)
Deck width27 ft (8.2 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,050 (2009)
Projected traffic6,526 by 2026
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$72,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Md 28 over Little Monocacy River built?

It was built in 1925, making it 100 years old in 2025.

What condition is Md 28 over Little Monocacy River 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 28 over Little Monocacy River carry?

About 5,050 vehicles per day (2009 count), of which roughly 2% are trucks.

How long is Md 28 over Little Monocacy River?

The structure is 40 ft (12.2 m) long with a longest span of 36 ft (11 m) and a deck 27 ft wide.

Who owns Md 28 over Little Monocacy River?

It is owned by the State Highway Agency.