US Bridges

Valley DR E over Int Shirley-I 94 006

Fair

Custer County, Montana · 10M NE Miles City · Structure no. L09003009+01001

Built
1984
41 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
260 ft
4 main spans
Daily traffic
391
2023 count
Owner
State
State Highway Agency

About this bridge

Valley DR E over Int Shirley-I 94 006 is a prestressed concrete stringer/multi-beam or girder carrying Valley DR E over Int Shirley-I 94 006 in Custer County, Montana. It was built in 1984, so it is 41 years old, younger 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 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 391 vehicles a day, roughly 4% of them trucks, projected to reach 411 by 2043. The structure is 260 ft (79.4 m) long and 30 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesValley DR E
CrossesInt Shirley-I 94 006
Location10M NE Miles City
RouteState Highway 9003
StateMontana
Coordinates46.51593, -105.69118
Functional classRural Major Collector

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
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
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53 US tons
Inventory rating30 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length260 ft (79.4 m)
Longest span86 ft (26.2 m)
Deck width30 ft (9.2 m)
Roadway width27 ft (8.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic391 (2023)
Projected traffic411 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

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 Valley DR E over Int Shirley-I 94 006 built?

It was built in 1984, making it 41 years old in 2025.

What condition is Valley DR E over Int Shirley-I 94 006 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 October 2023.

How much traffic does Valley DR E over Int Shirley-I 94 006 carry?

About 391 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Valley DR E over Int Shirley-I 94 006?

The structure is 260 ft (79.4 m) long with a longest span of 86 ft (26.2 m) and a deck 30 ft wide.

Who owns Valley DR E over Int Shirley-I 94 006?

It is owned by the State Highway Agency.