US Bridges

Central Ave W over Galt Ave-Rr

Fair

Cascade County, Montana · Great Falls-Central Ave W · Structure no. U05210000+01602

Built
1967
58 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
538 ft
4 main spans
Daily traffic
6,158
2023 count
Owner
State
State Highway Agency

About this bridge

Central Ave W over Galt Ave-Rr is a steel continuous stringer/multi-beam or girder carrying Central Ave W over Galt Ave-Rr in Cascade County, Montana. It was built in 1967, so it is 58 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 6,158 vehicles a day, roughly 5% of them trucks, projected to reach 6,466 by 2043. The structure is 538 ft (164 m) long and 35 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesCentral Ave W
CrossesGalt Ave-Rr
LocationGreat Falls-Central Ave W
RouteState Highway 103
CountyCascade County
StateMontana
Coordinates47.50789, -111.34074
Functional classUrban Other Principal 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 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 geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment7: Better than present minimum criteria
Operating rating63.1 US tons
Inventory rating38 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4 (+2 approach)
Design loadHS 20
Structure length538 ft (164 m)
Longest span128 ft (39 m)
Deck width35 ft (10.6 m)
Roadway width27 ft (8.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,158 (2023)
Projected traffic6,466 by 2043
Trucks5%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and railroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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$1.7 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Central Ave W over Galt Ave-Rr built?

It was built in 1967, making it 58 years old in 2025.

What condition is Central Ave W over Galt Ave-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 August 2024.

How much traffic does Central Ave W over Galt Ave-Rr carry?

About 6,158 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Central Ave W over Galt Ave-Rr?

The structure is 538 ft (164 m) long with a longest span of 128 ft (39 m) and a deck 35 ft wide.

Who owns Central Ave W over Galt Ave-Rr?

It is owned by the State Highway Agency.