US Bridges

Loc 210th ST over Little Pigeon

Poor

Harrison County, Iowa · 080413501 · Structure no. 000000000178550

Built
1930
95 years old, rebuilt 1961
Condition
Poor
inspected February 2024
Type
Truss - Thru
Steel
Length
93 ft
1 main span
Daily traffic
11
2022 count
Owner
County
County Highway Agency

About this bridge

Loc 210th ST over Little Pigeon is a steel truss - thru carrying Loc 210th ST over Little Pigeon in Harrison County, Iowa. It was built in 1930 and reconstructed in 1961, so it is 95 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 11 vehicles a day, projected to reach 11 by 2044. The structure is 93 ft (28.3 m) long and 24 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesLoc 210th ST
CrossesLittle Pigeon
Location080413501
RouteCounty Highway 0
StateIowa
Coordinates41.70361, -95.59287
Functional classRural Local

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.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating25.7 US tons
Inventory rating17.7 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckWood or timber
Main spans1 (+2 approach)
Design loadUnknown
Structure length93 ft (28.3 m)
Longest span50 ft (15.2 m)
Deck width24 ft (7.2 m)
Roadway width22 ft (6.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11 (2022)
Projected traffic11 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Loc 210th ST over Little Pigeon built?

It was built in 1930, making it 95 years old in 2025. It was reconstructed in 1961.

What condition is Loc 210th ST over Little Pigeon 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 Loc 210th ST over Little Pigeon carry?

About 11 vehicles per day (2022 count).

How long is Loc 210th ST over Little Pigeon?

The structure is 93 ft (28.3 m) long with a longest span of 50 ft (15.2 m) and a deck 24 ft wide.

Who owns Loc 210th ST over Little Pigeon?

It is owned by the County Highway Agency.