US Bridges

4th Ave. (1775 S.) over T.F.Northside Main Cnl

Fair

Gooding County, Idaho · 0.2 N. 0.6 W. Gooding · Structure no. 000000000024320

Built
1930
95 years old, rebuilt 1967
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Concrete
Length
30 ft
1 main span
Daily traffic
170
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

4th Ave. (1775 S.) over T.F.Northside Main Cnl is a concrete stringer/multi-beam or girder carrying 4th Ave. (1775 S.) over T.F.Northside Main Cnl in Gooding County, Idaho. It was built in 1930 and reconstructed in 1967, so it is 95 years old, older than the Idaho average of 45.3 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 170 vehicles a day, roughly 5% of them trucks, projected to reach 255 by 2039. The structure is 30 ft (9.1 m) long and 30 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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Carries4th Ave. (1775 S.)
CrossesT.F.Northside Main Cnl
Location0.2 N. 0.6 W. Gooding
RouteCity Street 0
CountyGooding County
StateIdaho
Coordinates42.94169, -114.72303
Functional classRural Local

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 protection8 Very GoodNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating38 US tons
Inventory rating23 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length30 ft (9.1 m)
Longest span29 ft (8.8 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic170 (2023)
Projected traffic255 by 2039
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$303,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 4th Ave. (1775 S.) over T.F.Northside Main Cnl built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1967.

What condition is 4th Ave. (1775 S.) over T.F.Northside Main Cnl 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 November 2023.

How much traffic does 4th Ave. (1775 S.) over T.F.Northside Main Cnl carry?

About 170 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is 4th Ave. (1775 S.) over T.F.Northside Main Cnl?

The structure is 30 ft (9.1 m) long with a longest span of 29 ft (8.8 m) and a deck 30 ft wide.

Who owns 4th Ave. (1775 S.) over T.F.Northside Main Cnl?

It is owned by the City or Municipal Highway Agency.