US Bridges

Valley DR over High Ditch 112

Fair

Yellowstone County, Montana · NW Laurel-Valley DR · Structure no. M56069000+00301

Built
1970
55 years old
Condition
Fair
inspected January 2025
Type
Tee Beam
Prestressed Concrete
Length
24 ft
1 main span
Daily traffic
937
2023 count
Owner
County
County Highway Agency

About this bridge

Valley DR over High Ditch 112 is a prestressed concrete tee beam carrying Valley DR over High Ditch 112 in Yellowstone County, Montana. It was built in 1970, so it is 55 years old, older than the Montana average of 47 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 937 vehicles a day, roughly 3% of them trucks, projected to reach 998 by 2043. The structure is 24 ft (7.3 m) long and 25 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesValley DR
CrossesHigh Ditch 112
LocationNW Laurel-Valley DR
RouteCity Street 56069
StateMontana
Coordinates45.68712, -108.77479
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating36 US tons
Inventory rating36 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length24 ft (7.3 m)
Longest span22 ft (6.7 m)
Deck width25 ft (7.7 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic937 (2023)
Projected traffic998 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
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 Valley DR over High Ditch 112 built?

It was built in 1970, making it 55 years old in 2025.

What condition is Valley DR over High Ditch 112 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 January 2025.

How much traffic does Valley DR over High Ditch 112 carry?

About 937 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is Valley DR over High Ditch 112?

The structure is 24 ft (7.3 m) long with a longest span of 22 ft (6.7 m) and a deck 25 ft wide.

Who owns Valley DR over High Ditch 112?

It is owned by the County Highway Agency.