US Bridges

Stc 4751;3rd St. over Lapwai Creek

FairPosted for load

Nez Perce County, Idaho · At Culdesac WCL;3rd St. · Structure no. 000000000029995

Built
1983
42 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
54 ft
1 main span
Daily traffic
250
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Stc 4751;3rd St. over Lapwai Creek is a steel stringer/multi-beam or girder carrying Stc 4751;3rd St. over Lapwai Creek in Nez Perce County, Idaho. It was built in 1983, so it is 42 years old, younger 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 250 vehicles a day, roughly 14% of them trucks, projected to reach 375 by 2042. The structure is 54 ft (16.5 m) long and 30 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesStc 4751;3rd St.
CrossesLapwai Creek
LocationAt Culdesac WCL;3rd St.
RouteCity Street 4751
CountyNez Perce County
StateIdaho
Coordinates46.37536, -116.67644
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating18 US tons
Inventory rating13 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans1
Design loadH 20
Structure length54 ft (16.5 m)
Longest span43 ft (13.1 m)
Deck width30 ft (9.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic250 (2023)
Projected traffic375 by 2042
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$572,000 (2018 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Stc 4751;3rd St. over Lapwai Creek built?

It was built in 1983, making it 42 years old in 2025.

What condition is Stc 4751;3rd St. over Lapwai 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 July 2024.

How much traffic does Stc 4751;3rd St. over Lapwai Creek carry?

About 250 vehicles per day (2023 count), of which roughly 14% are trucks.

How long is Stc 4751;3rd St. over Lapwai Creek?

The structure is 54 ft (16.5 m) long with a longest span of 43 ft (13.1 m) and a deck 30 ft wide.

Who owns Stc 4751;3rd St. over Lapwai Creek?

It is owned by the City or Municipal Highway Agency.