US Bridges

Mcintyre Street over Lapwai Creek

PoorPosted for load

Nez Perce County, Idaho · At Sweetwater · Structure no. 000000000029850

Built
1935
90 years old, rebuilt 1991
Condition
Poor
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
61 ft
2 main spans
Daily traffic
180
2023 count
Owner
County
County Highway Agency

About this bridge

Mcintyre Street over Lapwai Creek is a steel stringer/multi-beam or girder carrying Mcintyre Street over Lapwai Creek in Nez Perce County, Idaho. It was built in 1935 and reconstructed in 1991, so it is 90 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 2 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 180 vehicles a day, roughly 5% of them trucks, projected to reach 270 by 2039. The structure is 61 ft (18.6 m) long and 21 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesMcintyre Street
CrossesLapwai Creek
LocationAt Sweetwater
RouteCounty Highway 0
StateIdaho
Coordinates46.37275, -116.79447
Functional classRural Local

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure2 CriticalAdvanced deterioration of primary structural elements. Bridge may be closed until corrective action is taken.
Channel and channel protection3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Last inspectionJuly 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourScour critical; extensive scour has occurred
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating23 US tons
Inventory rating13 US tons

Structure

MaterialSteel
DeckSteel plate
Main spans2
Design loadH 15
Structure length61 ft (18.6 m)
Longest span35 ft (10.7 m)
Deck width21 ft (6.3 m)
Roadway width19 ft (5.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic180 (2023)
Projected traffic270 by 2039
Trucks5%
Lanes on structure1
Traffic directionOne-lane bridge for two-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$645,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Mcintyre Street over Lapwai Creek built?

It was built in 1935, making it 90 years old in 2025. It was reconstructed in 1991.

What condition is Mcintyre Street over Lapwai Creek 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 July 2024.

How much traffic does Mcintyre Street over Lapwai Creek carry?

About 180 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Mcintyre Street over Lapwai Creek?

The structure is 61 ft (18.6 m) long with a longest span of 35 ft (10.7 m) and a deck 21 ft wide.

Who owns Mcintyre Street over Lapwai Creek?

It is owned by the County Highway Agency.