US Bridges

Great River RD over Panther CR

Fair

Clayton County, Iowa · 091012604 · Structure no. 000000000117840

Built
1968
57 years old
Condition
Fair
inspected December 2024
Type
Slab
Concrete Continuous
Length
100 ft
3 main spans
Daily traffic
344
2022 count
Owner
County
County Highway Agency

About this bridge

Great River RD over Panther CR is a concrete continuous slab carrying Great River RD over Panther CR in Clayton 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 5 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 344 vehicles a day, roughly 10% of them trucks, projected to reach 344 by 2044. The structure is 100 ft (30.5 m) long and 30 ft wide.

Location

Open in Google Maps
CarriesGreat River RD
CrossesPanther CR
Location091012604
RouteCounty Highway 0
CountyClayton County
StateIowa
Coordinates42.66906, -90.92752
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating55.3 US tons
Inventory rating33.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length100 ft (30.5 m)
Longest span39 ft (11.9 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic344 (2022)
Projected traffic344 by 2044
Trucks10%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Great River RD over Panther CR built?

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

What condition is Great River RD over Panther 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 December 2024.

How much traffic does Great River RD over Panther CR carry?

About 344 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is Great River RD over Panther CR?

The structure is 100 ft (30.5 m) long with a longest span of 39 ft (11.9 m) and a deck 30 ft wide.

Who owns Great River RD over Panther CR?

It is owned by the County Highway Agency.