US Bridges

STC2784;MILLARD RD over Milner Gooding Canal

PoorPosted for load

Lincoln County, Idaho · 1.5 S. 2.6 E. Shoshone · Structure no. 000000000025105

Built
1955
70 years old, rebuilt 1977
Condition
Poor
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
78 ft
4 main spans
Daily traffic
200
2023 count
Owner
Local
Other Local Agency

About this bridge

STC2784;MILLARD RD over Milner Gooding Canal is a steel continuous stringer/multi-beam or girder carrying STC2784;MILLARD RD over Milner Gooding Canal in Lincoln County, Idaho. It was built in 1955 and reconstructed in 1977, so it is 70 years old, older than the Idaho average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 200 vehicles a day, projected to reach 300 by 2042. The structure is 78 ft (23.8 m) long and 27 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesSTC2784;MILLARD RD
CrossesMilner Gooding Canal
Location1.5 S. 2.6 E. Shoshone
RouteCounty Highway 2784
StateIdaho
Coordinates42.91592, -114.35419
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating10 US tons
Inventory rating6 US tons

Structure

MaterialSteel Continuous
DeckClosed grating
Main spans4
Design loadHS 20
Structure length78 ft (23.8 m)
Longest span19 ft (5.8 m)
Deck width27 ft (8.2 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2023)
Projected traffic300 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerOther Local Agency
Maintained byOther Local Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$765,000 (2019 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was STC2784;MILLARD RD over Milner Gooding Canal built?

It was built in 1955, making it 70 years old in 2025. It was reconstructed in 1977.

What condition is STC2784;MILLARD RD over Milner Gooding Canal in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in March 2024.

How much traffic does STC2784;MILLARD RD over Milner Gooding Canal carry?

About 200 vehicles per day (2023 count).

How long is STC2784;MILLARD RD over Milner Gooding Canal?

The structure is 78 ft (23.8 m) long with a longest span of 19 ft (5.8 m) and a deck 27 ft wide.

Who owns STC2784;MILLARD RD over Milner Gooding Canal?

It is owned by the Other Local Agency.