US Bridges

S. Thomas Lane over Ridenbaugh Canal

Good

Ada County, Idaho · 3.2 E. Meridian · Structure no. 000000000026306

Built
2002
23 years old
Condition
Good
inspected November 2022
Type
Stringer/Multi-beam or Girder
Steel
Length
34 ft
1 main span
Daily traffic
50
2023 count
Owner
County
County Highway Agency

About this bridge

S. Thomas Lane over Ridenbaugh Canal is a steel stringer/multi-beam or girder carrying S. Thomas Lane over Ridenbaugh Canal in Ada County, Idaho. It was built in 2002, so it is 23 years old, younger than the Idaho average of 45.3 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 50 vehicles a day, roughly 5% of them trucks, projected to reach 75 by 2039. The structure is 34 ft (10.4 m) long and 14 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesS. Thomas Lane
CrossesRidenbaugh Canal
Location3.2 E. Meridian
RouteCounty Highway 0
CountyAda County
StateIdaho
Coordinates43.60339, -116.32933
Functional classUrban Local

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than 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 alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating75 US tons
Inventory rating45 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length34 ft (10.4 m)
Longest span31 ft (9.6 m)
Deck width14 ft (4.3 m)
Roadway width13 ft (4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2023)
Projected traffic75 by 2039
Trucks5%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$150,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was S. Thomas Lane over Ridenbaugh Canal built?

It was built in 2002, making it 23 years old in 2025.

What condition is S. Thomas Lane over Ridenbaugh Canal 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 November 2022.

How much traffic does S. Thomas Lane over Ridenbaugh Canal carry?

About 50 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is S. Thomas Lane over Ridenbaugh Canal?

The structure is 34 ft (10.4 m) long with a longest span of 31 ft (9.6 m) and a deck 14 ft wide.

Who owns S. Thomas Lane over Ridenbaugh Canal?

It is owned by the County Highway Agency.