US Bridges

Burlingham RD over Buffalo CR

PoorPosted for load

Linn County, Iowa · 085051401 · Structure no. 000000000221950

Built
1900
125 years old
Condition
Poor
inspected September 2024
Type
Truss - Thru
Aluminum, Wrought Iron, or Cast Iron
Length
110 ft
1 main span
Daily traffic
50
2021 count
Owner
County
County Highway Agency

About this bridge

Burlingham RD over Buffalo CR is a aluminum, wrought iron, or cast iron truss - thru carrying Burlingham RD over Buffalo CR in Linn County, Iowa. It was built in 1900, so it is 125 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 3 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. Its operating status is: posted for load restriction.

It carries about 50 vehicles a day, projected to reach 50 by 2044. The structure is 110 ft (33.5 m) long and 15 ft wide.

Location

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CarriesBurlingham RD
CrossesBuffalo CR
Location085051401
RouteCounty Highway 0
CountyLinn County
StateIowa
Coordinates42.17974, -91.39884
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating18.8 US tons
Inventory rating12.9 US tons

Structure

Structure typeTruss - Thru
MaterialAluminum, Wrought Iron, or Cast Iron
DeckWood or timber
Main spans1
Design loadUnknown
Structure length110 ft (33.5 m)
Longest span108 ft (32.9 m)
Deck width15 ft (4.5 m)
Roadway width14 ft (4.2 m)
Vertical clearance over deck9 ft (2.7 m)

Traffic and service

Average daily traffic50 (2021)
Projected traffic50 by 2044
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Burlingham RD over Buffalo CR built?

It was built in 1900, making it 125 years old in 2025.

What condition is Burlingham RD over Buffalo CR 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 September 2024.

How much traffic does Burlingham RD over Buffalo CR carry?

About 50 vehicles per day (2021 count).

How long is Burlingham RD over Buffalo CR?

The structure is 110 ft (33.5 m) long with a longest span of 108 ft (32.9 m) and a deck 15 ft wide.

Who owns Burlingham RD over Buffalo CR?

It is owned by the County Highway Agency.