US Bridges

U.S. Route 40 over Susquehanna River-Pa RR

Fair

Harford County, Maryland · Harford-Cecil CO Line · Structure no. 300000H-Z040010

Built
1939
86 years old, rebuilt 2011
Condition
Fair
inspected May 2023
Type
Truss - Thru
Steel
Length
7,749 ft
6 main spans
Daily traffic
25,780
2022 count
Owner
Toll Authority
State Toll Authority

About this bridge

U.S. Route 40 over Susquehanna River-Pa RR is a steel truss - thru carrying U.S. Route 40 over Susquehanna River-Pa RR in Harford County, Maryland. It was built in 1939 and reconstructed in 2011, so it is 86 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 25,780 vehicles a day, roughly 6% of them trucks, projected to reach 35,775 by 2044. The structure is 7,749 ft (2,362 m) long and 52 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

Location

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CarriesU.S. Route 40
CrossesSusquehanna River-Pa RR
LocationHarford-Cecil CO Line
RouteU.S. Route 40
CountyHarford County
StateMaryland
Coordinates39.55643, -76.0986
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 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 adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.5 US tons
Inventory rating23 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckClosed grating
Main spans6 (+44 approach)
Design loadUnknown
Structure length7,749 ft (2,362 m)
Longest span456 ft (139 m)
Deck width52 ft (16 m)
Roadway width47 ft (14.4 m)
Vertical clearance over deck14 ft (4.3 m)

Traffic and service

Average daily traffic25,780 (2022)
Projected traffic35,775 by 2044
Trucks6%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad and waterway
Detour if closed14.9 mi (24 km)
TollToll bridge
National Highway SystemYes

Ownership and planned work

OwnerState Toll Authority
Maintained byState Toll Authority
Historic statusHistorical significance not determinable at this time
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost—
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was U.S. Route 40 over Susquehanna River-Pa RR built?

It was built in 1939, making it 86 years old in 2025. It was reconstructed in 2011.

What condition is U.S. Route 40 over Susquehanna River-Pa RR 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 2023.

How much traffic does U.S. Route 40 over Susquehanna River-Pa RR carry?

About 25,780 vehicles per day (2022 count), of which roughly 6% are trucks.

How long is U.S. Route 40 over Susquehanna River-Pa RR?

The structure is 7,749 ft (2,362 m) long with a longest span of 456 ft (139 m) and a deck 52 ft wide.

Who owns U.S. Route 40 over Susquehanna River-Pa RR?

It is owned by the State Toll Authority.