US Bridges

STC4805;CEDR Rdg R over Cedar Creek

Good

Latah County, Idaho · 5.2 E. 2.5 N. Kendrick · Structure no. 000000000029600

Built
1978
47 years old
Condition
Good
inspected June 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
70 ft
1 main span
Daily traffic
320
2023 count
Owner
Local
Other Local Agency

About this bridge

STC4805;CEDR Rdg R over Cedar Creek is a prestressed concrete box beam or girders - multiple carrying STC4805;CEDR Rdg R over Cedar Creek in Latah County, Idaho. It was built in 1978, so it is 47 years old, older 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 320 vehicles a day, roughly 28% of them trucks, projected to reach 480 by 2042. The structure is 70 ft (21.3 m) long and 28 ft wide. If it were closed, the detour would be 24.9 mi (40 km).

CarriesSTC4805;CEDR Rdg R
CrossesCedar Creek
Location5.2 E. 2.5 N. Kendrick
RouteCounty Highway 4805
StateIdaho
Coordinates46.65031, -116.54834
Functional classRural Major Collector

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.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2024
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 adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating78 US tons
Inventory rating30 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length70 ft (21.3 m)
Longest span68 ft (20.7 m)
Deck width28 ft (8.5 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic320 (2023)
Projected traffic480 by 2042
Trucks28%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed24.9 mi (40 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was STC4805;CEDR Rdg R over Cedar Creek built?

It was built in 1978, making it 47 years old in 2025.

What condition is STC4805;CEDR Rdg R over Cedar Creek 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 June 2024.

How much traffic does STC4805;CEDR Rdg R over Cedar Creek carry?

About 320 vehicles per day (2023 count), of which roughly 28% are trucks.

How long is STC4805;CEDR Rdg R over Cedar Creek?

The structure is 70 ft (21.3 m) long with a longest span of 68 ft (20.7 m) and a deck 28 ft wide.

Who owns STC4805;CEDR Rdg R over Cedar Creek?

It is owned by the Other Local Agency.