US Bridges

I 540-SEC 1 NB LN over Boston St. Seb. Co.

Fair

Sebastian County, Arkansas · 2.01 MI No of SH 45 · Structure no. 0000000000B5096

Built
1968
57 years old, rebuilt 1988
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
153 ft
3 main spans
Daily traffic
27,581
2017 count
Owner
State
State Highway Agency

About this bridge

I 540-SEC 1 NB LN over Boston St. Seb. Co. is a steel stringer/multi-beam or girder carrying I 540-SEC 1 NB LN over Boston St. Seb. Co. in Sebastian County, Arkansas. It was built in 1968 and reconstructed in 1988, so it is 57 years old, older than the Arkansas average of 45.1 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 27,581 vehicles a day, roughly 1% of them trucks, projected to reach 36,242 by 2028. The structure is 153 ft (46.6 m) long and 44 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesI 540-SEC 1 NB LN
CrossesBoston St. Seb. Co.
Location2.01 MI No of SH 45
RouteInterstate 540
CountySebastian County
StateArkansas
Coordinates35.35448, -94.36507
Functional classUrban Principal Arterial - Interstate

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.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length153 ft (46.6 m)
Longest span55 ft (16.8 m)
Deck width44 ft (13.5 m)
Roadway width41 ft (12.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic27,581 (2017)
Projected traffic36,242 by 2028
Trucks1%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 I 540-SEC 1 NB LN over Boston St. Seb. Co. built?

It was built in 1968, making it 57 years old in 2025. It was reconstructed in 1988.

What condition is I 540-SEC 1 NB LN over Boston St. Seb. Co. 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 I 540-SEC 1 NB LN over Boston St. Seb. Co. carry?

About 27,581 vehicles per day (2017 count), of which roughly 1% are trucks.

How long is I 540-SEC 1 NB LN over Boston St. Seb. Co.?

The structure is 153 ft (46.6 m) long with a longest span of 55 ft (16.8 m) and a deck 44 ft wide.

Who owns I 540-SEC 1 NB LN over Boston St. Seb. Co.?

It is owned by the State Highway Agency.