US Bridges

Old River Road over Stc 5752;N.FK.CDA River

PoorPosted for load

Shoshone County, Idaho · 0.6 N. Enaville · Structure no. 000000000030785

Built
1930
95 years old
Condition
Poor
inspected June 2024
Type
Truss - Thru
Steel
Length
264 ft
1 main span
Daily traffic
1,200
2023 count
Owner
County
County Highway Agency

About this bridge

Old River Road over Stc 5752;N.FK.CDA River is a steel truss - thru carrying Old River Road over Stc 5752;N.FK.CDA River in Shoshone County, Idaho. It was built in 1930, 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 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 1,200 vehicles a day, roughly 26% of them trucks, projected to reach 1,800 by 2042. The structure is 264 ft (80.5 m) long and 19 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

CarriesOld River Road
CrossesStc 5752;N.FK.CDA River
Location0.6 N. Enaville
RouteCounty Highway 0
StateIdaho
Coordinates47.56956, -116.25253
Functional classRural Minor 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating16 US tons
Inventory rating10 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckWood or timber
Main spans1 (+4 approach)
Design loadH 15
Structure length264 ft (80.5 m)
Longest span150 ft (45.7 m)
Deck width19 ft (5.9 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deck15 ft (4.5 m)

Traffic and service

Average daily traffic1,200 (2023)
Projected traffic1,800 by 2042
Trucks26%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesHighway and waterway
Detour if closed8.7 mi (14 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$2.2 million (2019 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Old River Road over Stc 5752;N.FK.CDA River built?

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

What condition is Old River Road over Stc 5752;N.FK.CDA River 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 June 2024.

How much traffic does Old River Road over Stc 5752;N.FK.CDA River carry?

About 1,200 vehicles per day (2023 count), of which roughly 26% are trucks.

How long is Old River Road over Stc 5752;N.FK.CDA River?

The structure is 264 ft (80.5 m) long with a longest span of 150 ft (45.7 m) and a deck 19 ft wide.

Who owns Old River Road over Stc 5752;N.FK.CDA River?

It is owned by the County Highway Agency.