US Bridges

Is 70 Wbr over Monument Road

Fair

Frederick County, Maryland · 1.59 Miles E of Wash CO · Structure no. 100000100133014

Built
1968
57 years old
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
254 ft
3 main spans
Daily traffic
83,710
2017 count
Owner
State
State Highway Agency

About this bridge

Is 70 Wbr over Monument Road is a steel continuous stringer/multi-beam or girder carrying Is 70 Wbr over Monument Road in Frederick County, Maryland. It was built in 1968, so it is 57 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 83,710 vehicles a day, roughly 8% of them trucks, projected to reach 129,414 by 2039. The structure is 254 ft (77.4 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
CrossesMonument Road
Location1.59 Miles E of Wash CO
RouteInterstate 70
CountyFrederick County
StateMaryland
Coordinates39.51481, -77.59511
Functional classRural 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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
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 evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating89 US tons
Inventory rating53 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length254 ft (77.4 m)
Longest span96 ft (29.3 m)
Deck width54 ft (16.5 m)
Roadway width51 ft (15.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic83,710 (2017)
Projected traffic129,414 by 2039
Trucks8%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and waterway
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Is 70 Wbr over Monument Road built?

It was built in 1968, making it 57 years old in 2025.

What condition is Is 70 Wbr over Monument Road 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 Is 70 Wbr over Monument Road carry?

About 83,710 vehicles per day (2017 count), of which roughly 8% are trucks.

How long is Is 70 Wbr over Monument Road?

The structure is 254 ft (77.4 m) long with a longest span of 96 ft (29.3 m) and a deck 54 ft wide.

Who owns Is 70 Wbr over Monument Road?

It is owned by the State Highway Agency.