US Bridges

STC4803;OLD HWY 95 over Cow Creek

Fair

Latah County, Idaho · 4.9 N. 0.4 W. Genesee · Structure no. 000000000029610

Built
1930
95 years old, rebuilt 1978
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
22 ft
1 main span
Daily traffic
130
2023 count
Owner
Local
Other Local Agency

About this bridge

STC4803;OLD HWY 95 over Cow Creek is a steel stringer/multi-beam or girder carrying STC4803;OLD HWY 95 over Cow Creek in Latah County, Idaho. It was built in 1930 and reconstructed in 1978, 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 fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 130 vehicles a day, roughly 18% of them trucks, projected to reach 195 by 2042. The structure is 22 ft (6.7 m) long and 24 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesSTC4803;OLD HWY 95
CrossesCow Creek
Location4.9 N. 0.4 W. Genesee
RouteCounty Highway 4803
CountyLatah County
StateIdaho
Coordinates46.61917, -116.93469
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating41 US tons
Inventory rating24 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHS 15
Structure length22 ft (6.7 m)
Longest span21 ft (6.4 m)
Deck width24 ft (7.3 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic130 (2023)
Projected traffic195 by 2042
Trucks18%
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

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$327,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was STC4803;OLD HWY 95 over Cow Creek built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1978.

What condition is STC4803;OLD HWY 95 over Cow Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in May 2023.

How much traffic does STC4803;OLD HWY 95 over Cow Creek carry?

About 130 vehicles per day (2023 count), of which roughly 18% are trucks.

How long is STC4803;OLD HWY 95 over Cow Creek?

The structure is 22 ft (6.7 m) long with a longest span of 21 ft (6.4 m) and a deck 24 ft wide.

Who owns STC4803;OLD HWY 95 over Cow Creek?

It is owned by the Other Local Agency.