US Bridges

Loc 100th ST over Stream

Fair

Buchanan County, Iowa · 090070501 · Structure no. 000000000083270

Built
1940
85 years old
Condition
Fair
inspected December 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
56 ft
2 main spans
Daily traffic
44
2022 count
Owner
County
County Highway Agency

About this bridge

Loc 100th ST over Stream is a steel stringer/multi-beam or girder carrying Loc 100th ST over Stream in Buchanan County, Iowa. It was built in 1940, so it is 85 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 44 vehicles a day, projected to reach 44 by 2043. The structure is 56 ft (17.1 m) long and 16 ft wide.

Location

Open in Google Maps
CarriesLoc 100th ST
CrossesStream
Location090070501
RouteCounty Highway 0
CountyBuchanan County
StateIowa
Coordinates42.64329, -91.69747
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
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 geometry8: Equal to present desirable criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating30.3 US tons
Inventory rating23.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans2
Design loadUnknown
Structure length56 ft (17.1 m)
Longest span27 ft (8.2 m)
Deck width16 ft (4.9 m)
Roadway width16 ft (4.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic44 (2022)
Projected traffic44 by 2043
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Loc 100th ST over Stream built?

It was built in 1940, making it 85 years old in 2025.

What condition is Loc 100th ST over 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 December 2023.

How much traffic does Loc 100th ST over Stream carry?

About 44 vehicles per day (2022 count).

How long is Loc 100th ST over Stream?

The structure is 56 ft (17.1 m) long with a longest span of 27 ft (8.2 m) and a deck 16 ft wide.

Who owns Loc 100th ST over Stream?

It is owned by the County Highway Agency.