Spruce Ave over Stream

Poor

Jefferson County, Iowa · 072081910 · Structure no. 000000000366015

Built: 1950; 75 years old
Condition: Poor; inspected February 2024
Type: Culvert; Concrete Continuous
Length: 29 ft; 2 main spans
Daily traffic: 100; 2022 count
Owner: County; County Highway Agency

About this bridge

Spruce Ave over Stream is a concrete continuous culvert carrying Spruce Ave over Stream in Jefferson County, Iowa. It was built in 1950, so it is 75 years old, older than the Iowa average of 45.5 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.

It carries about 100 vehicles a day, projected to reach 100 by 2044. The structure is 29 ft (8.8 m) long. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesSpruce Ave

CrossesStream

Location072081910

RouteCounty Highway 0

CountyJefferson County

StateIowa

Coordinates41.02154, -91.83298

Functional classRural Major Collector

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.

Component	Rating	Meaning
Channel and channel protection	6 Satisfactory	Structural elements show some minor deterioration.
Culvert	4 Poor	Advanced section loss, deterioration, spalling or scour.

Last inspectionFebruary 2024

Inspection intervalevery 24 months

Operating statusOpen, no restriction

ScourFoundations stable; scour above top of footing

Structural evaluation4: Meets minimum tolerable limits to be left in place as is

Waterway adequacy7: Better than present minimum criteria

Approach roadway alignment7: Better than present minimum criteria

Operating rating48.6 US tons

Inventory rating36 US tons

Structure

Structure typeCulvert

MaterialConcrete Continuous

DeckNot applicable

Main spans2

Design loadH 20

Structure length29 ft (8.8 m)

Longest span14 ft (4.3 m)

Deck width0 ft (0 m)

Roadway width0 ft (0 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2022)

Projected traffic100 by 2044

Trucks0%

Lanes on structure2

Traffic directionTwo-way traffic

CarriesHighway

CrossesWaterway

Detour if closed6.2 mi (10 km)

TollOn a free road

National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency

Maintained byCounty Highway Agency

Historic statusNot eligible for the National Register of Historic Places

Work proposedReplacement because of substandard load-carrying capacity or roadway geometry

Estimated improvement cost—

NavigationNo navigation control on waterway

Frequently asked questions

When was Spruce Ave over Stream built?

It was built in 1950, making it 75 years old in 2025.

What condition is Spruce Ave over Stream 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 February 2024.

How much traffic does Spruce Ave over Stream carry?

About 100 vehicles per day (2022 count).

How long is Spruce Ave over Stream?

The structure is 29 ft (8.8 m) long with a longest span of 14 ft (4.3 m).

Who owns Spruce Ave over Stream?

It is owned by the County Highway Agency.