US Bridges

IH 35 Nbfr & SH 81 over Three Mile Creek

Fair

Hill County, Texas · 0.60 MI N of FM 310 · Structure no. 091100001407218

Built
1964
61 years old, rebuilt 2008
Condition
Fair
inspected December 2024
Type
Culvert
Concrete
Length
75 ft
7 main spans
Daily traffic
4,260
2023 count
Owner
State
State Highway Agency

About this bridge

IH 35 Nbfr & SH 81 over Three Mile Creek is a concrete culvert carrying IH 35 Nbfr & SH 81 over Three Mile Creek in Hill County, Texas. It was built in 1964 and reconstructed in 2008, so it is 61 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 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 4,260 vehicles a day, roughly 9% of them trucks, projected to reach 4,197 by 2039. The structure is 75 ft (22.9 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesIH 35 Nbfr & SH 81
CrossesThree Mile Creek
Location0.60 MI N of FM 310
RouteInterstate 35
CountyHill County
StateTexas
Coordinates31.9657, -97.11802
Functional classRural 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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating26 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans7
Design loadHS 20
Structure length75 ft (22.9 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,260 (2023)
Projected traffic4,197 by 2039
Trucks9%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 statusPossibly eligible for the National Register; requires further investigation
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$500,000
NavigationNo navigation control on waterway

Frequently asked questions

When was IH 35 Nbfr & SH 81 over Three Mile Creek built?

It was built in 1964, making it 61 years old in 2025. It was reconstructed in 2008.

What condition is IH 35 Nbfr & SH 81 over Three Mile Creek 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 December 2024.

How much traffic does IH 35 Nbfr & SH 81 over Three Mile Creek carry?

About 4,260 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is IH 35 Nbfr & SH 81 over Three Mile Creek?

The structure is 75 ft (22.9 m) long with a longest span of 10 ft (3 m).

Who owns IH 35 Nbfr & SH 81 over Three Mile Creek?

It is owned by the State Highway Agency.