US Bridges

Md 90 over Assawoman Bay

Fair

Worcester County, Maryland · 1.17 Miles West of Md 528 · Structure no. 100000230021010

Built
1971
54 years old, rebuilt 2009
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
7,580 ft
3 main spans
Daily traffic
30,510
2022 count
Owner
State
State Highway Agency

About this bridge

Md 90 over Assawoman Bay is a steel stringer/multi-beam or girder carrying Md 90 over Assawoman Bay in Worcester County, Maryland. It was built in 1971 and reconstructed in 2009, so it is 54 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 30,510 vehicles a day, roughly 2% of them trucks, projected to reach 117,000 by 2042. The structure is 7,580 ft (2,310.4 m) long and 41 ft wide. If it were closed, the detour would be 24.9 mi (40 km).

Location

Open in Google Maps
CarriesMd 90
CrossesAssawoman Bay
Location1.17 Miles West of Md 528
RouteState Highway 90
CountyWorcester County
StateMaryland
Coordinates38.39016, -75.10047
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
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 protection8 Very GoodNo problems noted.
Last inspectionNovember 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 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 rating38.5 US tons
Inventory rating23 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3 (+136 approach)
Design loadHS 20
Structure length7,580 ft (2,310.4 m)
Longest span130 ft (39.6 m)
Deck width41 ft (12.6 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30,510 (2022)
Projected traffic117,000 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed24.9 mi (40 km)
TollOn a free road
National Highway SystemYes

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$20.8 million
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was Md 90 over Assawoman Bay built?

It was built in 1971, making it 54 years old in 2025. It was reconstructed in 2009.

What condition is Md 90 over Assawoman Bay 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 November 2024.

How much traffic does Md 90 over Assawoman Bay carry?

About 30,510 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is Md 90 over Assawoman Bay?

The structure is 7,580 ft (2,310.4 m) long with a longest span of 130 ft (39.6 m) and a deck 41 ft wide.

Who owns Md 90 over Assawoman Bay?

It is owned by the State Highway Agency.