US Bridges

Nhs 7773;10th Ave over City St;uprr;caldwell Op

PoorPosted for load

Canyon County, Idaho · In CALDWELL;10th Ave · Structure no. 000000000021760

Built
1956
69 years old, rebuilt 2003
Condition
Poor
inspected November 2024
Type
Tee Beam
Concrete Continuous
Length
621 ft
12 main spans
Daily traffic
19,500
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Nhs 7773;10th Ave over City St;uprr;caldwell Op is a concrete continuous tee beam carrying Nhs 7773;10th Ave over City St;uprr;caldwell Op in Canyon County, Idaho. It was built in 1956 and reconstructed in 2003, so it is 69 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 19,500 vehicles a day, roughly 1% of them trucks, projected to reach 29,250 by 2042. The structure is 621 ft (189.3 m) long and 64 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesNhs 7773;10th Ave
CrossesCity St;uprr;caldwell Op
LocationIn CALDWELL;10th Ave
RouteCity Street 7773
StateIdaho
Coordinates43.66605, -116.68359
Functional classUrban Other Principal Arterial

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.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating30 US tons
Inventory rating18 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans12
Design loadHS 20
Structure length621 ft (189.3 m)
Longest span53 ft (16.2 m)
Deck width64 ft (19.4 m)
Roadway width54 ft (16.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,500 (2023)
Projected traffic29,250 by 2042
Trucks1%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway and railroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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$10.2 million (2020 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Nhs 7773;10th Ave over City St;uprr;caldwell Op built?

It was built in 1956, making it 69 years old in 2025. It was reconstructed in 2003.

What condition is Nhs 7773;10th Ave over City St;uprr;caldwell Op 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 November 2024.

How much traffic does Nhs 7773;10th Ave over City St;uprr;caldwell Op carry?

About 19,500 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is Nhs 7773;10th Ave over City St;uprr;caldwell Op?

The structure is 621 ft (189.3 m) long with a longest span of 53 ft (16.2 m) and a deck 64 ft wide.

Who owns Nhs 7773;10th Ave over City St;uprr;caldwell Op?

It is owned by the City or Municipal Highway Agency.