US Bridges

Is 70 Wbr over US 40 Alt

Fair

Frederick County, Maryland · 0.28 M E of Br No 1014500 · Structure no. 100000100131014

Built
1967
58 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
237 ft
2 main spans
Daily traffic
74,920
2009 count
Owner
State
State Highway Agency

About this bridge

Is 70 Wbr over US 40 Alt is a steel continuous stringer/multi-beam or girder carrying Is 70 Wbr over US 40 Alt in Frederick County, Maryland. It was built in 1967, so it is 58 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 74,920 vehicles a day, roughly 8% of them trucks, projected to reach 112,260 by 2029. The structure is 237 ft (72.2 m) long and 54 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesIs 70 Wbr
CrossesUS 40 Alt
Location0.28 M E of Br No 1014500
RouteInterstate 70
CountyFrederick County
StateMaryland
Coordinates39.42151, -77.48494
Functional classUrban Principal Arterial - Interstate

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70 US tons
Inventory rating42 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length237 ft (72.2 m)
Longest span116 ft (35.4 m)
Deck width54 ft (16.5 m)
Roadway width51 ft (15.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic74,920 (2009)
Projected traffic112,260 by 2029
Trucks8%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Is 70 Wbr over US 40 Alt built?

It was built in 1967, making it 58 years old in 2025.

What condition is Is 70 Wbr over US 40 Alt 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 Is 70 Wbr over US 40 Alt carry?

About 74,920 vehicles per day (2009 count), of which roughly 8% are trucks.

How long is Is 70 Wbr over US 40 Alt?

The structure is 237 ft (72.2 m) long with a longest span of 116 ft (35.4 m) and a deck 54 ft wide.

Who owns Is 70 Wbr over US 40 Alt?

It is owned by the State Highway Agency.