US Bridges

Sma 7643;ECKERT RD over Ridenbaugh Canal

Poor

Ada County, Idaho · At Boise Ecl;eckert RD · Structure no. 000000000012805

Built
1954
71 years old
Condition
Poor
inspected October 2024
Type
Tee Beam
Concrete
Length
71 ft
2 main spans
Daily traffic
6,700
2023 count
Owner
County
County Highway Agency

About this bridge

Sma 7643;ECKERT RD over Ridenbaugh Canal is a concrete tee beam carrying Sma 7643;ECKERT RD over Ridenbaugh Canal in Ada County, Idaho. It was built in 1954, so it is 71 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.

It carries about 6,700 vehicles a day, roughly 2% of them trucks, projected to reach 10,050 by 2042. The structure is 71 ft (21.6 m) long and 44 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesSma 7643;ECKERT RD
CrossesRidenbaugh Canal
LocationAt Boise Ecl;eckert RD
RouteCounty Highway 7643
StateIdaho
Coordinates43.56511, -116.13306
Functional classUrban Minor Arterial

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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating46 US tons
Inventory rating27 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 15
Structure length71 ft (21.6 m)
Longest span34 ft (10.4 m)
Deck width44 ft (13.4 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,700 (2023)
Projected traffic10,050 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.5 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Sma 7643;ECKERT RD over Ridenbaugh Canal built?

It was built in 1954, making it 71 years old in 2025.

What condition is Sma 7643;ECKERT RD over Ridenbaugh 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 October 2024.

How much traffic does Sma 7643;ECKERT RD over Ridenbaugh Canal carry?

About 6,700 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is Sma 7643;ECKERT RD over Ridenbaugh Canal?

The structure is 71 ft (21.6 m) long with a longest span of 34 ft (10.4 m) and a deck 44 ft wide.

Who owns Sma 7643;ECKERT RD over Ridenbaugh Canal?

It is owned by the County Highway Agency.