US Bridges

Pine Street over Small Natural Stream

Fair

Black Hawk County, Iowa · 42.639833 -92.456111 · Structure no. 000000000014940

Built
1968
57 years old
Condition
Fair
inspected April 2024
Type
Culvert
Concrete Continuous
Length
26 ft
2 main spans
Daily traffic
1,109
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Pine Street over Small Natural Stream is a concrete continuous culvert carrying Pine Street over Small Natural Stream in Black Hawk County, Iowa. It was built in 1968, so it is 57 years old, older than the Iowa average of 45.5 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 1,109 vehicles a day, roughly 3% of them trucks, projected to reach 1,109 by 2042. The structure is 26 ft (7.9 m) long. If it were closed, the detour would be 13 mi (21 km).

CarriesPine Street
CrossesSmall Natural Stream
Location42.639833 -92.456111
RouteCity Street 0
StateIowa
Coordinates42.63979, -92.45606
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating51.5 US tons
Inventory rating39.7 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHL 93
Structure length26 ft (7.9 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,109 (2022)
Projected traffic1,109 by 2042
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13 mi (21 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$55,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Pine Street over Small Natural Stream built?

It was built in 1968, making it 57 years old in 2025.

What condition is Pine Street over Small Natural Stream 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 April 2024.

How much traffic does Pine Street over Small Natural Stream carry?

About 1,109 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is Pine Street over Small Natural Stream?

The structure is 26 ft (7.9 m) long with a longest span of 12 ft (3.7 m).

Who owns Pine Street over Small Natural Stream?

It is owned by the City or Municipal Highway Agency.