US Bridges

Maryland Avenue over Tiber Branch

Fair

Howard County, Maryland · At Main Street · Structure no. 200000HO0130010

Built
1955
70 years old
Condition
Fair
inspected April 2024
Type
Tee Beam
Concrete
Length
28 ft
1 main span
Daily traffic
6,000
2024 count
Owner
County
County Highway Agency

About this bridge

Maryland Avenue over Tiber Branch is a concrete tee beam carrying Maryland Avenue over Tiber Branch in Howard County, Maryland. It was built in 1955, so it is 70 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 6,000 vehicles a day, roughly 4% of them trucks, projected to reach 8,082 by 2044. The structure is 28 ft (8.4 m) long and 112 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesMaryland Avenue
CrossesTiber Branch
LocationAt Main Street
RouteCounty Highway 199
CountyHoward County
StateMaryland
Coordinates39.26761, -76.79517
Functional classUrban Local

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 protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
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 adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.4 US tons
Inventory rating34 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length28 ft (8.4 m)
Longest span26 ft (7.9 m)
Deck width112 ft (34.1 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,000 (2024)
Projected traffic8,082 by 2044
Trucks4%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Maryland Avenue over Tiber Branch built?

It was built in 1955, making it 70 years old in 2025.

What condition is Maryland Avenue over Tiber 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 April 2024.

How much traffic does Maryland Avenue over Tiber Branch carry?

About 6,000 vehicles per day (2024 count), of which roughly 4% are trucks.

How long is Maryland Avenue over Tiber Branch?

The structure is 28 ft (8.4 m) long with a longest span of 26 ft (7.9 m) and a deck 112 ft wide.

Who owns Maryland Avenue over Tiber Branch?

It is owned by the County Highway Agency.