US Bridges

IRR - S 13 over Tule Creek

Fair

Roosevelt County, Montana · 11M NE Wolf Point · Structure no. P00032008+01001

Built
1991
34 years old
Condition
Fair
inspected August 2024
Type
Slab
Concrete Continuous
Length
120 ft
4 main spans
Daily traffic
368
2023 count
Owner
State
State Highway Agency

About this bridge

IRR - S 13 over Tule Creek is a concrete continuous slab carrying IRR - S 13 over Tule Creek in Roosevelt County, Montana. It was built in 1991, so it is 34 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 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 368 vehicles a day, roughly 7% of them trucks, projected to reach 386 by 2043. The structure is 120 ft (36.6 m) long and 38 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesIRR - S 13
CrossesTule Creek
Location11M NE Wolf Point
RouteState Highway 13
CountyRoosevelt County
StateMontana
Coordinates48.18274, -105.49599
Functional classRural Minor 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.1 US tons
Inventory rating38 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHL 93
Structure length120 ft (36.6 m)
Longest span33 ft (10.1 m)
Deck width38 ft (11.6 m)
Roadway width36 ft (10.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic368 (2023)
Projected traffic386 by 2043
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was IRR - S 13 over Tule Creek built?

It was built in 1991, making it 34 years old in 2025.

What condition is IRR - S 13 over Tule Creek 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 August 2024.

How much traffic does IRR - S 13 over Tule Creek carry?

About 368 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is IRR - S 13 over Tule Creek?

The structure is 120 ft (36.6 m) long with a longest span of 33 ft (10.1 m) and a deck 38 ft wide.

Who owns IRR - S 13 over Tule Creek?

It is owned by the State Highway Agency.