US Bridges

7th Ave N over RR

Fair

Hill County, Montana · HAVRE-7th Ave N · Structure no. U05710000+02421

Built
1936
89 years old, rebuilt 1986
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
828 ft
6 main spans
Daily traffic
3,404
2023 count
Owner
State
State Highway Agency

About this bridge

7th Ave N over RR is a steel stringer/multi-beam or girder carrying 7th Ave N over RR in Hill County, Montana. It was built in 1936 and reconstructed in 1986, so it is 89 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 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 3,404 vehicles a day, roughly 4% of them trucks, projected to reach 3,574 by 2043. The structure is 828 ft (252.3 m) long and 53 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

Location

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Carries7th Ave N
CrossesRR
LocationHAVRE-7th Ave N
RouteCity Street 5711
CountyHill County
StateMontana
Coordinates48.55439, -109.67175
Functional classUrban 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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2024
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 geometry7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating37 US tons
Inventory rating26 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans6 (+24 approach)
Design loadHS 20 + Mod
Structure length828 ft (252.3 m)
Longest span77 ft (23.4 m)
Deck width53 ft (16.1 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,404 (2023)
Projected traffic3,574 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed2.5 mi (4 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$3.9 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was 7th Ave N over RR built?

It was built in 1936, making it 89 years old in 2025. It was reconstructed in 1986.

What condition is 7th Ave N over RR 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 May 2024.

How much traffic does 7th Ave N over RR carry?

About 3,404 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is 7th Ave N over RR?

The structure is 828 ft (252.3 m) long with a longest span of 77 ft (23.4 m) and a deck 53 ft wide.

Who owns 7th Ave N over RR?

It is owned by the State Highway Agency.