US Bridges

24th RD NE over Int Collins RD I 15 003

Good

Teton County, Montana · 6M SE Brady · Structure no. L50088000+01001

Built
1977
48 years old
Condition
Good
inspected June 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
298 ft
4 main spans
Daily traffic
88
2023 count
Owner
State
State Highway Agency

About this bridge

24th RD NE over Int Collins RD I 15 003 is a prestressed concrete stringer/multi-beam or girder carrying 24th RD NE over Int Collins RD I 15 003 in Teton County, Montana. It was built in 1977, so it is 48 years old, older than the Montana average of 47 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 88 vehicles a day, roughly 3% of them trucks, projected to reach 93 by 2043. The structure is 298 ft (90.7 m) long and 34 ft wide.

Carries24th RD NE
CrossesInt Collins RD I 15 003
Location6M SE Brady
RouteCounty Highway 50088
StateMontana
Coordinates47.95627, -111.75114
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51 US tons
Inventory rating27 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length298 ft (90.7 m)
Longest span107 ft (32.6 m)
Deck width34 ft (10.4 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic88 (2023)
Projected traffic93 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
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 24th RD NE over Int Collins RD I 15 003 built?

It was built in 1977, making it 48 years old in 2025.

What condition is 24th RD NE over Int Collins RD I 15 003 in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in June 2023.

How much traffic does 24th RD NE over Int Collins RD I 15 003 carry?

About 88 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is 24th RD NE over Int Collins RD I 15 003?

The structure is 298 ft (90.7 m) long with a longest span of 107 ft (32.6 m) and a deck 34 ft wide.

Who owns 24th RD NE over Int Collins RD I 15 003?

It is owned by the State Highway Agency.