US Bridges

Local over Trinkle Creek

Fair

Crawford County, Iowa · 085371802 · Structure no. 000000000129950

Built
1968
57 years old
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
62 ft
1 main span
Daily traffic
21
2022 count
Owner
County
County Highway Agency

About this bridge

Local over Trinkle Creek is a steel stringer/multi-beam or girder carrying Local over Trinkle Creek in Crawford 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 21 vehicles a day, projected to reach 21 by 2044. The structure is 62 ft (18.9 m) long and 24 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesLocal
CrossesTrinkle Creek
Location085371802
RouteCounty Highway 0
CountyCrawford County
StateIowa
Coordinates42.17351, -95.20726
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating32.3 US tons
Inventory rating25.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length62 ft (18.9 m)
Longest span61 ft (18.6 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic21 (2022)
Projected traffic21 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Local over Trinkle Creek built?

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

What condition is Local over Trinkle Creek 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 March 2024.

How much traffic does Local over Trinkle Creek carry?

About 21 vehicles per day (2022 count).

How long is Local over Trinkle Creek?

The structure is 62 ft (18.9 m) long with a longest span of 61 ft (18.6 m) and a deck 24 ft wide.

Who owns Local over Trinkle Creek?

It is owned by the County Highway Agency.