US Bridges

Green Ridge RD over Spring CR

Fair

Linn County, Iowa · 082052408 · Structure no. 000000000220092

Built
1998
27 years old
Condition
Fair
inspected October 2024
Type
Slab
Wood or Timber
Length
48 ft
2 main spans
Daily traffic
128
2022 count
Owner
County
County Highway Agency

About this bridge

Green Ridge RD over Spring CR is a wood or timber slab carrying Green Ridge RD over Spring CR in Linn County, Iowa. It was built in 1998, so it is 27 years old, younger 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 128 vehicles a day, projected to reach 128 by 2044. The structure is 48 ft (14.6 m) long and 25 ft wide.

Location

Open in Google Maps
CarriesGreen Ridge RD
CrossesSpring CR
Location082052408
RouteCounty Highway 0
CountyLinn County
StateIowa
Coordinates41.903, -91.37365
Functional classRural Local

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating86.3 US tons
Inventory rating63.8 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans2
Design loadHS 20
Structure length48 ft (14.6 m)
Longest span24 ft (7.3 m)
Deck width25 ft (7.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic128 (2022)
Projected traffic128 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Green Ridge RD over Spring CR built?

It was built in 1998, making it 27 years old in 2025.

What condition is Green Ridge RD over Spring CR 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 October 2024.

How much traffic does Green Ridge RD over Spring CR carry?

About 128 vehicles per day (2022 count).

How long is Green Ridge RD over Spring CR?

The structure is 48 ft (14.6 m) long with a longest span of 24 ft (7.3 m) and a deck 25 ft wide.

Who owns Green Ridge RD over Spring CR?

It is owned by the County Highway Agency.