US Bridges

FM 1171 over IH 35E

Fair

Denton County, Texas · 1.45 MI NW of SH 121 Bus · Structure no. 180610019602056

Built
1954
71 years old, rebuilt 2017
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
200 ft
2 main spans
Daily traffic
15,972
2019 count
Owner
State
State Highway Agency

About this bridge

FM 1171 over IH 35E is a steel continuous stringer/multi-beam or girder carrying FM 1171 over IH 35E in Denton County, Texas. It was built in 1954 and reconstructed in 2017, so it is 71 years old, older than the Texas average of 44.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 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 15,972 vehicles a day, roughly 13% of them trucks, projected to reach 28,000 by 2033. The structure is 200 ft (61 m) long and 78 ft wide.

Location

Open in Google Maps
CarriesFM 1171
CrossesIH 35E
Location1.45 MI NW of SH 121 Bus
RouteState Highway 1171
CountyDenton County
StateTexas
Coordinates33.04629, -97.00868
Functional classUrban Minor Arterial

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2 (+1 approach)
Design loadHL 93
Structure length200 ft (61 m)
Longest span82 ft (25 m)
Deck width78 ft (23.7 m)
Roadway width64 ft (19.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,972 (2019)
Projected traffic28,000 by 2033
Trucks13%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$33,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was FM 1171 over IH 35E built?

It was built in 1954, making it 71 years old in 2025. It was reconstructed in 2017.

What condition is FM 1171 over IH 35E 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 October 2023.

How much traffic does FM 1171 over IH 35E carry?

About 15,972 vehicles per day (2019 count), of which roughly 13% are trucks.

How long is FM 1171 over IH 35E?

The structure is 200 ft (61 m) long with a longest span of 82 ft (25 m) and a deck 78 ft wide.

Who owns FM 1171 over IH 35E?

It is owned by the State Highway Agency.