US Bridges

Linn Buchanan over Dead Dog Run

Fair

Linn County, Iowa · 086070303 · Structure no. 000000000223160

Built
1949
76 years old, rebuilt 1953
Condition
Fair
inspected September 2024
Type
Slab
Wood or Timber
Length
21 ft
1 main span
Daily traffic
44
2022 count
Owner
County
County Highway Agency

About this bridge

Linn Buchanan over Dead Dog Run is a wood or timber slab carrying Linn Buchanan over Dead Dog Run in Linn County, Iowa. It was built in 1949 and reconstructed in 1953, so it is 76 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 2044. The structure is 21 ft (6.4 m) long and 21 ft wide.

Location

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CarriesLinn Buchanan
CrossesDead Dog Run
Location086070303
RouteCounty Highway 0
CountyLinn County
StateIowa
Coordinates42.2965, -91.64169
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
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating39.7 US tons
Inventory rating30.3 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadHS 20
Structure length21 ft (6.4 m)
Longest span19 ft (5.8 m)
Deck width21 ft (6.3 m)
Roadway width20 ft (6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic44 (2022)
Projected traffic44 by 2044
Trucks0%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Linn Buchanan over Dead Dog Run built?

It was built in 1949, making it 76 years old in 2025. It was reconstructed in 1953.

What condition is Linn Buchanan over Dead Dog Run 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 September 2024.

How much traffic does Linn Buchanan over Dead Dog Run carry?

About 44 vehicles per day (2022 count).

How long is Linn Buchanan over Dead Dog Run?

The structure is 21 ft (6.4 m) long with a longest span of 19 ft (5.8 m) and a deck 21 ft wide.

Who owns Linn Buchanan over Dead Dog Run?

It is owned by the County Highway Agency.